Matching articles for "Tegretol"
Comparison Table: Some Oral Antiseizure Medications (online only)
The Medical Letter on Drugs and Therapeutics • August 5, 2024; (Issue 1708)
...
View the Comparison Table: Some Oral Antiseizure Medications
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • August 5, 2024; (Issue 1708)
When used for the appropriate seizure type,
antiseizure medications (ASMs) are roughly
equivalent in efficacy. In addition to the seizure type,
the choice of drug is usually based on factors such
as ease of...
When used for the appropriate seizure type,
antiseizure medications (ASMs) are roughly
equivalent in efficacy. In addition to the seizure type,
the choice of drug is usually based on factors such
as ease of use, spectrum of activity, adverse effects,
interactions with other drugs, presence of comorbid
conditions, suitability for elderly persons and those
with childbearing potential, and cost. Treatment
should begin with a single drug, increasing the
dosage gradually until seizures are controlled or
adverse effects become unacceptable. If seizures
persist, expert clinicians generally try at least one and
sometimes a second alternative drug as monotherapy
before considering use of two drugs at the same time.
Drugs for Bipolar Disorder
The Medical Letter on Drugs and Therapeutics • April 1, 2024; (Issue 1699)
Bipolar disorder is characterized by episodes of
mania, hypomania, and depression. Recurrences of
manic or (more frequently) depressive symptoms
are common. About 15-20% of patients with bipolar
disorder...
Bipolar disorder is characterized by episodes of
mania, hypomania, and depression. Recurrences of
manic or (more frequently) depressive symptoms
are common. About 15-20% of patients with bipolar
disorder die by suicide.
Nonopioid Drugs for Pain
The Medical Letter on Drugs and Therapeutics • March 7, 2022; (Issue 1645)
Nonopioid drugs can be used in the treatment of
many nociceptive and neuropathic pain conditions.
For severe pain, especially severe chronic cancer
pain, use of opioids may be necessary....
Nonopioid drugs can be used in the treatment of
many nociceptive and neuropathic pain conditions.
For severe pain, especially severe chronic cancer
pain, use of opioids may be necessary. Noninvasive
nonpharmacologic treatments, including physical
and psychological therapies, have been shown to
improve pain and function in patients with some
common chronic pain conditions and are unlikely
to cause serious harms. A multimodal approach to
analgesic therapy can increase pain control while
reducing opioid use and adverse effects.
Nonopioid Drugs for Pain
The Medical Letter on Drugs and Therapeutics • February 12, 2018; (Issue 1540)
Nonopioid drugs can be used in the treatment of many
nociceptive and neuropathic pain conditions. Use of
opioids for pain will be reviewed in a future...
Nonopioid drugs can be used in the treatment of many
nociceptive and neuropathic pain conditions. Use of
opioids for pain will be reviewed in a future issue.
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • July 31, 2017; (Issue 1526)
Treatment of epilepsy should begin with a single
antiepileptic drug (AED), increasing its dosage
gradually until seizures are controlled or adverse
effects become intolerable. If seizures...
Treatment of epilepsy should begin with a single
antiepileptic drug (AED), increasing its dosage
gradually until seizures are controlled or adverse
effects become intolerable. If seizures persist,
specialists generally recommend trying at least
one and sometimes a second alternative drug as
monotherapy before considering use of two drugs
concurrently. When used for the appropriate seizure
type, AEDs are roughly equivalent in efficacy. Drug
choice is usually based on factors such as ease of
use, adverse effects, drug interactions, presence of
comorbidities, and cost.
Comparison Table: Some Oral Antiepileptic Drugs (online only)
The Medical Letter on Drugs and Therapeutics • July 31, 2017; (Issue 1526)
...
View the Comparison Table: Some Oral Antiepileptic Drugs
Drugs for Bipolar Disorder
The Medical Letter on Drugs and Therapeutics • August 15, 2016; (Issue 1501)
Bipolar disorder is characterized by intermittent
episodes of mania and/or depression. Even with
maintenance treatment, recurrences of manic or (more
frequently) depressive episodes are common. Some of
the...
Bipolar disorder is characterized by intermittent
episodes of mania and/or depression. Even with
maintenance treatment, recurrences of manic or (more
frequently) depressive episodes are common. Some of
the drugs and dosages recommended here have not
been approved by the FDA for use in bipolar disorder.
Treatment of Atrial Fibrillation
The Medical Letter on Drugs and Therapeutics • July 7, 2014; (Issue 1446)
The treatment of atrial fibrillation includes anticoagulation,
rate control, and rhythm control. New US
guidelines for the management of atrial fibrillation
have recently been...
The treatment of atrial fibrillation includes anticoagulation,
rate control, and rhythm control. New US
guidelines for the management of atrial fibrillation
have recently been published.
Drugs for Psychiatric Disorders
The Medical Letter on Drugs and Therapeutics • June 1, 2013; (Issue 130)
Drugs are not the only treatment for psychiatric illness.
Psychotherapy remains an important component
in the management of these disorders, and cognitive
behavioral therapy (CBT) can be used for many...
Drugs are not the only treatment for psychiatric illness.
Psychotherapy remains an important component
in the management of these disorders, and cognitive
behavioral therapy (CBT) can be used for many of
them as well. Electroconvulsive therapy (ECT) has a
long history of efficacy and safety when drugs are
ineffective or cannot be used.
Drugs for Pain
The Medical Letter on Drugs and Therapeutics • April 1, 2013; (Issue 128)
Pain can be acute or chronic. The two major types of
chronic pain are nociceptive pain and neuropathic
pain. Nociceptive pain can be treated with nonopioid
analgesics or opioids. Neuropathic pain is less...
Pain can be acute or chronic. The two major types of
chronic pain are nociceptive pain and neuropathic
pain. Nociceptive pain can be treated with nonopioid
analgesics or opioids. Neuropathic pain is less responsive
to opioids and is often treated with adjuvant drugs
such as antidepressants and antiepileptics. Combining
different types of analgesics may provide an additive
analgesic effect without increasing adverse effects.
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • February 1, 2013; (Issue 126)
Treatment of epilepsy should begin with a single
drug, increasing the dosage gradually until seizures
are controlled or adverse effects become unacceptable.
If seizures persist, expert clinicians...
Treatment of epilepsy should begin with a single
drug, increasing the dosage gradually until seizures
are controlled or adverse effects become unacceptable.
If seizures persist, expert clinicians generally
prescribe at least one and sometimes a second alternative
drug as monotherapy before considering use of
two drugs at the same time. When used for the appropriate
seizure type, antiepileptic drugs are roughly
equivalent in efficacy. The choice of drug is usually
based on factors such as ease of use, adverse effects,
interactions with other drugs, presence of comorbid
conditions and cost.
Ezogabine (Potiga) for Epilepsy
The Medical Letter on Drugs and Therapeutics • August 20, 2012; (Issue 1397)
The FDA has approved ezogabine (ee-ZOE-ga-been;
Potiga – GSK/Valeant) for oral adjunctive treatment of
partial-onset seizures in adults. Ezogabine is available
in Europe as retigabine...
The FDA has approved ezogabine (ee-ZOE-ga-been;
Potiga – GSK/Valeant) for oral adjunctive treatment of
partial-onset seizures in adults. Ezogabine is available
in Europe as retigabine (Trobalt).
Drugs for Treatment of ADHD
The Medical Letter on Drugs and Therapeutics • May 1, 2011; (Issue 105)
Attention-deficit/hyperactivity disorder (ADHD) is a disruptive behavior disorder that occurs in about 5%
of school-age children, most often in boys, and frequently persists into young...
Attention-deficit/hyperactivity disorder (ADHD) is a disruptive behavior disorder that occurs in about 5%
of school-age children, most often in boys, and frequently persists into young adulthood.
Drugs for Depression and Bipolar Disorder
The Medical Letter on Drugs and Therapeutics • May 1, 2010; (Issue 93)
Drugs are not the only treatment for mood disorders. Psychotherapy remains an important component in the management of these disorders, and electroconvulsive therapy (ECT) has a long history of efficacy and...
Drugs are not the only treatment for mood disorders. Psychotherapy remains an important component in the management of these disorders, and electroconvulsive therapy (ECT) has a long history of efficacy and safety
when drugs are ineffective, poorly tolerated or cannot be used. Some drugs are recommended here for indications that have not been approved by the FDA.
Drugs for Pain
The Medical Letter on Drugs and Therapeutics • April 1, 2010; (Issue 92)
Pain can be acute or chronic. Chronic pain has been broadly classified into two types: nociceptive and neuropathic. Nociceptive pain can be treated with nonopioid analgesics or opioids. Neuropathic pain is less...
Pain can be acute or chronic. Chronic pain has been broadly classified into two types: nociceptive and neuropathic. Nociceptive pain can be treated with nonopioid analgesics or opioids. Neuropathic pain is less responsive to opioids; adjuvant medicines such as antidepressants and anticonvulsants are often used to treat neuropathic pain. Combining different types of analgesics may provide an additive analgesic effect without increasing adverse effects.
Vigabatrin (Sabril) for Epilepsy
The Medical Letter on Drugs and Therapeutics • February 22, 2010; (Issue 1332)
The FDA has approved vigabatrin (vye gá ba trin; Sabril – Lundbeck) for oral use as add-on therapy for complex partial seizures in adults who are refractory to several antiepileptic drugs and as monotherapy...
The FDA has approved vigabatrin (vye gá ba trin; Sabril – Lundbeck) for oral use as add-on therapy for complex partial seizures in adults who are refractory to several antiepileptic drugs and as monotherapy for infantile spasms. Vigabatrin has been available in other countries for many years. Because of its potential for retinal toxicity, it will be available in the US only through a restricted distribution program called SHARE (Support, Help and Resources for Epilepsy). Prescribers and pharmacists distributing the drug must register, and patients must undergo visual field testing.
Tolvaptan (Samsca) for Hyponatremia
The Medical Letter on Drugs and Therapeutics • November 30, 2009; (Issue 1326)
The FDA has approved the marketing of tolvaptan (Samsca - Otsuka), an oral vasopressin receptor antagonist, for treatment of hypervolemic or euvolemic hyponatremia due to congestive heart failure (CHF),...
The FDA has approved the marketing of tolvaptan (Samsca - Otsuka), an oral vasopressin receptor antagonist, for treatment of hypervolemic or euvolemic hyponatremia due to congestive heart failure (CHF), cirrhosis or the syndrome of inappropriate antidiuretic hormone secretion (SIADH). A similar drug, conivaptan (Vaprisol) is already available for intravenous (IV) treatment of euvolemic hyponatremia in hospitalized patients. Tolvaptan was approved by the FDA for both inpatient and outpatient use, but it should be started in a hospital.
Lacosamide for Epilepsy
The Medical Letter on Drugs and Therapeutics • June 29, 2009; (Issue 1315)
The FDA has approved lacosamide (Vimpat - UCB Pharma) for oral or intravenous (IV) use as add-on therapy in adults with partial-onset...
The FDA has approved lacosamide (Vimpat - UCB Pharma) for oral or intravenous (IV) use as add-on therapy in adults with partial-onset seizures.
Rufinamide (Banzel) for Epilepsy
The Medical Letter on Drugs and Therapeutics • March 9, 2009; (Issue 1307)
Rufinamide (Banzel - Eisai), a triazole derivative structurally unrelated to other marketed antiepileptic drugs (AEDs), has been approved by the FDA for treatment of seizures associated with Lennox-Gastaut...
Rufinamide (Banzel - Eisai), a triazole derivative structurally unrelated to other marketed antiepileptic drugs (AEDs), has been approved by the FDA for treatment of seizures associated with Lennox-Gastaut syndrome (LGS) in patients ≥4 years old.
Correction: Bendamustine (Treanda) for CLL and NHL
The Medical Letter on Drugs and Therapeutics • December 1, 2008; (Issue 1300)
(Med Lett Drugs Ther 2008; 50:91) In the Clinical Studies section, the complete response rate with chlorambucil for CLL was 2% (not...
(Med Lett Drugs Ther 2008; 50:91) In the Clinical Studies section, the complete response rate with chlorambucil for CLL was 2% (not 24%).
Bendamustine (Treanda) for CLL and NHL
The Medical Letter on Drugs and Therapeutics • November 17, 2008; (Issue 1299)
Bendamustine HCl (Treanda - Cephalon), an unusual DNA-alkylating agent that has been used in Europe for many years to treat lymphoma, has now been approved by the FDA for treatment of chronic lymphocytic...
Bendamustine HCl (Treanda - Cephalon), an unusual DNA-alkylating agent that has been used in Europe for many years to treat lymphoma, has now been approved by the FDA for treatment of chronic lymphocytic leukemia (CLL) and non-Hodgkin's lymphoma (NHL).
Drug Interactions with Simvastatin
The Medical Letter on Drugs and Therapeutics • October 20, 2008; (Issue 1297)
A recent letter to the editor of the Annals of Internal Medicine documented a single case of myopathy apparently due to an interaction between simvastatin (Zocor, and others) and green tea. Since it became...
A recent letter to the editor of the Annals of Internal Medicine documented a single case of myopathy apparently due to an interaction between simvastatin (Zocor, and others) and green tea. Since it became available generically, simvastatin has surpassed atorvastatin (Lipitor) as the best selling statin. As such, it is probably the most common cause of statin-induced myopathy, which is often a result of drug interactions.
Drugs for Tobacco Dependence
The Medical Letter on Drugs and Therapeutics • September 1, 2008; (Issue 73)
Peptic ulcers caused by treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) are mainly gastric ulcers. The greater the number of office visits and the longer the counseling time, the higher the smoking...
Peptic ulcers caused by treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) are mainly gastric ulcers. The greater the number of office visits and the longer the counseling time, the higher the smoking cessation rates have been.
Addendum: Warfarin-Acetaminophen Interaction
The Medical Letter on Drugs and Therapeutics • June 16, 2008; (Issue 1288)
A reader expressed disappointment that our recent listing of “Some Warfarin Drug Interactions”1 did not include acetaminophen. Perhaps it should have. Acetaminophen can increase the anticoagulant effect of...
A reader expressed disappointment that our recent listing of “Some Warfarin Drug Interactions”1 did not include acetaminophen. Perhaps it should have. Acetaminophen can increase the anticoagulant effect of warfarin, particularly with continued use, but it does so inconsistently. The mechanism of this interaction has not been established, but may be related to an acetaminophen metabolite inhibiting vitamin K-epoxide reductase, the target for warfarin’s anticoagulant effect.2
Patient susceptibility varies, possibly on a genetic basis; occasional use of acetaminophen generally has little or no effect on the international normalized ratio (INR) in patients on chronic warfarin therapy, but in some, even a few grams of the drug may cause a dramatic increase in INR. One study in healthy subjects found no effect of acetaminophen 4 g per day for 2 weeks, while another study in patients with the same acetaminophen dose for the same period of time found a moderate increase in INR.3,4 It might be prudent to monitor INR in patients on chronic warfarin therapy more closely than usual when they take more than 2 g per day of acetaminophen for more than a few days.
1. Pharmacogenetic-based dosing of warfarin. Med Lett Drugs Ther 2008; 50:39.
2. HH Thijssen et al. Paracetamol (acetaminophen) warfarin interaction: NAPQI, the toxic metabolite of paracetamol, is an inhibitor of enzymes in the vitamin K cycle. Thromb Haemost 2004; 92:797.
3. D Kwan et al. The effects of acetaminophen on pharmacokinetics and pharmacodynamics of warfarin. J Clin Pharmacol 1999; 39:68.
4. I Mahe et al. Paracetamol: A haemorrhagic risk factor in patients on warfarin. Br J Clin Pharmacol 2005; 59:371.
Download U.S. English
Patient susceptibility varies, possibly on a genetic basis; occasional use of acetaminophen generally has little or no effect on the international normalized ratio (INR) in patients on chronic warfarin therapy, but in some, even a few grams of the drug may cause a dramatic increase in INR. One study in healthy subjects found no effect of acetaminophen 4 g per day for 2 weeks, while another study in patients with the same acetaminophen dose for the same period of time found a moderate increase in INR.3,4 It might be prudent to monitor INR in patients on chronic warfarin therapy more closely than usual when they take more than 2 g per day of acetaminophen for more than a few days.
1. Pharmacogenetic-based dosing of warfarin. Med Lett Drugs Ther 2008; 50:39.
2. HH Thijssen et al. Paracetamol (acetaminophen) warfarin interaction: NAPQI, the toxic metabolite of paracetamol, is an inhibitor of enzymes in the vitamin K cycle. Thromb Haemost 2004; 92:797.
3. D Kwan et al. The effects of acetaminophen on pharmacokinetics and pharmacodynamics of warfarin. J Clin Pharmacol 1999; 39:68.
4. I Mahe et al. Paracetamol: A haemorrhagic risk factor in patients on warfarin. Br J Clin Pharmacol 2005; 59:371.
Download U.S. English
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • June 1, 2008; (Issue 70)
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases...
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases appear inadvisable because of adverse effects, most Medical Letter consultants generally prescribe at least one and sometimes a second alternative drug as monotherapy before considering use of two drugs at the same time. Most antiepileptic drugs initially approved by the FDA only as adjunctive therapy for partial seizures may also be effective for other types of seizures and as monotherapy. Studies suggest that when used for the appropriate seizure type, antiepileptic drugs are roughly equivalent in efficacy. The choice of a drug is usually based on factors such as ease of use, adverse effects and cost.
Pharmacogenetic-Based Dosing of Warfarin
The Medical Letter on Drugs and Therapeutics • May 19, 2008; (Issue 1286)
Warfarin sodium (Coumadin, and others) and other coumarin anticoagulants prevent thrombosis, but patient response is highly variable and overanticoagulation can lead to hemorrhage. Genotyping patients for...
Warfarin sodium (Coumadin, and others) and other coumarin anticoagulants prevent thrombosis, but patient response is highly variable and overanticoagulation can lead to hemorrhage. Genotyping patients for single nucleotide polymorphisms (SNPs) that affect coumarin metabolism and sensitivity may help clinicians estimate the therapeutic warfarin dose. The FDA has added a note to warfarin labeling recommending lowrange doses for patients with such genetic variations. Commercial tests for these variants are now available and cost about $500 per test.
In Brief: Genetic Test for Carbamazepine-Induced Stevens-Johnson Syndrome
The Medical Letter on Drugs and Therapeutics • April 21, 2008; (Issue 1284)
Genetic Test for Carbamazepine-Induced Stevens-Johnson Syndrome Carbamazepine (Tegretol, Carbatrol, Equetro, and others), which is now used to treat not only epilepsy but also trigeminal neuralgia and manic...
Genetic Test for Carbamazepine-Induced Stevens-Johnson Syndrome Carbamazepine (Tegretol, Carbatrol, Equetro, and others), which is now used to treat not only epilepsy but also trigeminal neuralgia and manic episodes in patients with bipolar disorder,1 is a known cause of Stevens-Johnson syndrome (SJS). The incidence of carbamazepine-induced SJS in countries with mainly white populations is 1 to 6 per 10,000 new users of the drug, but Asian patients have a 10-fold higher incidence of this reaction. An association has been found between the human leukocyte antigen (HLA)-B*1502 allele and carbamazepine-induced SJS in a Chinese population.2 This allele occurs almost exclusively in Asians.3,4 The FDA is now recommending that Asian patients be tested for genetic susceptibility to carbamazepine-induced SJS before starting the drug. The genetic test should be available in most clinical chemistry labs.
1. Extended-release carbamazepine (Equetro) for bipolar disorder. Med Lett Drugs Ther 2005; 47:27.
2. WH Chung et al. Medical genetics: a marker for Stevens- Johnson syndrome. Nature 2004; 428:486.
3. C Lonjou et al. A marker for Stevens-Johnson syndrome. . . : ethnicity matters. Pharmacogenomics J 2006; 6:265.
4. A Alfirevic et al. HLA-B locus in Caucasian patients with carbamazepine hypersensitivity. Pharmacogenomics 2006; 7:813.
Download U.S. English
1. Extended-release carbamazepine (Equetro) for bipolar disorder. Med Lett Drugs Ther 2005; 47:27.
2. WH Chung et al. Medical genetics: a marker for Stevens- Johnson syndrome. Nature 2004; 428:486.
3. C Lonjou et al. A marker for Stevens-Johnson syndrome. . . : ethnicity matters. Pharmacogenomics J 2006; 6:265.
4. A Alfirevic et al. HLA-B locus in Caucasian patients with carbamazepine hypersensitivity. Pharmacogenomics 2006; 7:813.
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Antifungal Drugs
The Medical Letter on Drugs and Therapeutics • January 1, 2008; (Issue 65)
The drugs of choice for treatment of some fungal infections are listed in the tables. Some of the indications and dosages recommended here have not been approved by the FDA. Other guidelines are available from...
The drugs of choice for treatment of some fungal infections are listed in the tables. Some of the indications and dosages recommended here have not been approved by the FDA. Other guidelines are available from the Infectious Diseases Society of America (www.idsociety.org).
Drugs for Psychiatric Disorders
The Medical Letter on Drugs and Therapeutics • June 1, 2006; (Issue 46)
Drugs are not the only treatment for psychiatric illness. Psychotherapy remains an important component in the management of these disorders, and cognitive behavioral therapy (CBT) is used for many of them as...
Drugs are not the only treatment for psychiatric illness. Psychotherapy remains an important component in the management of these disorders, and cognitive behavioral therapy (CBT) is used for many of them as well. Electroconvulsive therapy (ECT) has a long history of efficacy and safety when drugs are ineffective or cannot be used.
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • November 1, 2005; (Issue 39)
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases...
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases appear inadvisable because of adverse effects, most Medical Letter consultants generally prescribe at least one and sometimes a second alternative drug as monotherapy before considering use of two drugs at the same time. Most antiepileptic drugs initially approved by the FDA only as adjunctive therapy for partial seizures may also be effective for other types of seizures and as monotherapy.
Pregabalin (Lyrica) for Neuropathic Pain and Epilepsy
The Medical Letter on Drugs and Therapeutics • September 12, 2005; (Issue 1217)
Pregabalin (Lyrica - Pfizer), a structural analog of gamma-aminobutyric acid (GABA) similar to gabapentin (Neurontin - Pfizer, and others), which recently became available generically, has been approved by the...
Pregabalin (Lyrica - Pfizer), a structural analog of gamma-aminobutyric acid (GABA) similar to gabapentin (Neurontin - Pfizer, and others), which recently became available generically, has been approved by the FDA for treatment of neuropathic pain associated with postherpetic neuralgia (PHN) and diabetic peripheral neuropathy (DPN), and for adjunctive treatment of partial onset seizures in adults with epilepsy.
Duloxetine (Cymbalta) for Diabetic Neuropathic Pain
The Medical Letter on Drugs and Therapeutics • August 15, 2005; (Issue 1215)
Duloxetine hydrochloride (Cymbalta - Lilly), a selective serotonin and norepinephrine reuptake inhibitor (SNRI) available for treatment of depression, has also been approved by the FDA for treatment of...
Duloxetine hydrochloride (Cymbalta - Lilly), a selective serotonin and norepinephrine reuptake inhibitor (SNRI) available for treatment of depression, has also been approved by the FDA for treatment of neuropathic pain associated with diabetic peripheral neuropathy (DPN). Duloxetine is one of two drugs approved specifically for management of neuropathic pain due to diabetes; the other, pregabalin (Lyrica - Pfizer), will be marketed soon and will be reviewed in the next issue of The Medical Letter.
CYP3A and Drug Interactions
The Medical Letter on Drugs and Therapeutics • July 4, 2005; (Issue 1212)
Serious adverse interactions between drugs continue to be reported. Many of these are due to inhibition or induction of cytochrome P450 (CYP) enzymes, particularly CYP3A4. CYP3A is thought to be involved in the...
Serious adverse interactions between drugs continue to be reported. Many of these are due to inhibition or induction of cytochrome P450 (CYP) enzymes, particularly CYP3A4. CYP3A is thought to be involved in the metabolism of more than 50 percent of currently prescribed drugs.2 CYP3A4, which is more abundantly expressed than CYP3A5, accounts for most CYP3A activity in vivo.
Erlotinib (Tarceva) for Advanced Non-Small Cell Lung Cancer
The Medical Letter on Drugs and Therapeutics • March 28, 2005; (Issue 1205)
Erlotinib (Tarceva) is the second oral epidermal growth factor receptor (EGFR) inhibitor to become available in the US for treatment of advanced refractory NSCLC. In clinical trials, erlotinib produced a...
Erlotinib (Tarceva) is the second oral epidermal growth factor receptor (EGFR) inhibitor to become available in the US for treatment of advanced refractory NSCLC. In clinical trials, erlotinib produced a response rate of only 8.9%, but increased median survival from 4.7 to 6.7 months. Patients who had never smoked and those with EGFR-positive tumors survived longer. Erlotinib is generally well tolerated; diarrhea and rash are the most common adverse effects.
Extended-Release Carbamazepine (Equetro) for Bipolar Disorder
The Medical Letter on Drugs and Therapeutics • March 28, 2005; (Issue 1205)
An extended-release formulation of carbamazepine, available since 1997 for treatment of epilepsy, has now been approved under a new name, Equetro, for acute mania and mixed episodes of bipolar disorder....
An extended-release formulation of carbamazepine, available since 1997 for treatment of epilepsy, has now been approved under a new name, Equetro, for acute mania and mixed episodes of bipolar disorder. Although the drug was effective in some patients for up to 6 months, it has not been approved for maintenance treatment. Carbamazepine has not been shown to be more effective than lithium or valproate, and it can cause serious adverse effects.
Antifungal Drugs
The Medical Letter on Drugs and Therapeutics • February 1, 2005; (Issue 30)
The drugs of choice for treatment of some fungal infections are listed in the table that begins on page 8. Some of the indications and dosages recommended here have not been approved by the...
The drugs of choice for treatment of some fungal infections are listed in the table that begins on page 8. Some of the indications and dosages recommended here have not been approved by the FDA.
Topiramate (Topamax) for Prevention of Migraine
The Medical Letter on Drugs and Therapeutics • January 31, 2005; (Issue 1201)
Patients with frequent, severe or disabling migraine headaches may benefit from taking a drug to prevent the attacks. Beta-blockers traditionally have been the prophylactic treatment of choice, but in recent...
Patients with frequent, severe or disabling migraine headaches may benefit from taking a drug to prevent the attacks. Beta-blockers traditionally have been the prophylactic treatment of choice, but in recent years some antiepileptic drugs such as valproate (Depakote, and others) and topiramate (Topamax) have also been used for this indication. Valproate was approved by the FDA for such use in 1996. Now topiramate has also been approved.
Alprazolam (Xanax, and others) Revisited
The Medical Letter on Drugs and Therapeutics • January 17, 2005; (Issue 1200)
Alprazolam, a short-acting benzodiazepine, is one of the most widely prescribed drugs in the US. It is approved by the FDA for treatment of anxiety and panic disorder. An extended-release formulation, Xanax XR,...
Alprazolam, a short-acting benzodiazepine, is one of the most widely prescribed drugs in the US. It is approved by the FDA for treatment of anxiety and panic disorder. An extended-release formulation, Xanax XR, which can be taken once a day, recently became available for panic disorder.
Telithromycin (Ketek) for Respiratory Infections
The Medical Letter on Drugs and Therapeutics • August 16, 2004; (Issue 1189)
Telithromycin (Ketek - Aventis) has been approved by the FDA for oral treatment of mild to moderate community-acquired pneumonia, acute exacerbations of chronic bronchitis and acute bacterial sinusitis in...
Telithromycin (Ketek - Aventis) has been approved by the FDA for oral treatment of mild to moderate community-acquired pneumonia, acute exacerbations of chronic bronchitis and acute bacterial sinusitis in patients age 18 and older. The drug is the first in a new class of antibiotics, the ketolides, derived from the macrolide erythromycin. Telithromycin has been marketed in Europe since 2001.
Drugs for Pain
The Medical Letter on Drugs and Therapeutics • July 1, 2004; (Issue 23)
Three types of analgesic drugs are available: non-opioids, including aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; opioids; and adjuvant drugs that are not usually thought of...
Three types of analgesic drugs are available: non-opioids, including aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; opioids; and adjuvant drugs that are not usually thought of as analgesics, such as antidepressants, which can act as adjuvants when given with NSAIDs or opioids, or have analgesic activity of their own in some types of pain. Combining two different types of analgesics may provide an additive analgesic effect without necessarily increasing adverse effects.
Olanzapine/Fluoxetine (Symbyax) for Bipolar Depression
The Medical Letter on Drugs and Therapeutics • March 15, 2004; (Issue 1178)
The fixed-dose combination of olanzapine and fluoxetine (Symbyax - Lilly) has been approved by the FDA for treatment of depressive episodes associated with bipolar disorder. Olanzapine alone (Zyprexa), which is...
The fixed-dose combination of olanzapine and fluoxetine (Symbyax - Lilly) has been approved by the FDA for treatment of depressive episodes associated with bipolar disorder. Olanzapine alone (Zyprexa), which is mainly used as an antipsychotic (Medical Letter 2003; 45:102), is FDA-approved for treatment of acute manic episodes and for maintenance treatment of bipolar disorder. Fluoxetine alone (Prozac, and others), which is mainly used as an antidepressant (Medical Letter 2003; 45:93), has no specific approval for use in bipolar disorder.
Drug Interactions with Grapefruit Juice
The Medical Letter on Drugs and Therapeutics • January 5, 2004; (Issue 1173)
The ability of grapefruit juice to increase serum concentrations of drugs was first discovered during a study of the effect of ethanol on felodipine (Plendil) pharmacokinetics. Double-strength grapefruit juice...
The ability of grapefruit juice to increase serum concentrations of drugs was first discovered during a study of the effect of ethanol on felodipine (Plendil) pharmacokinetics. Double-strength grapefruit juice used to disguise the taste of ethanol resulted in higher than expected serum concentrations of felodipine (DG Bailey et al, Clin Invest Med 1989; 12:357).
Drugs for Psychiatric Disorders
The Medical Letter on Drugs and Therapeutics • July 1, 2003; (Issue 11)
The number of drugs marketed for psychiatric indications has increased sharply in recent years. The recommendations in this article are based on the results of controlled trials and on the experience and...
The number of drugs marketed for psychiatric indications has increased sharply in recent years. The recommendations in this article are based on the results of controlled trials and on the experience and opinions of Medical Letter consultants. Interactions with other drugs can be found in The Medical Letter Handbook of Adverse Drug Interactions, 2003.
Drug Interactions
The Medical Letter on Drugs and Therapeutics • June 8, 2003; (Issue 1158)
Changes caused by one drug in the absorption, distribution, metabolism or excretion of another may lead to a pharmacokinetic adverse drug interaction (DN Juurlink et al, JAMA 2003; 289:1652). Additive drug...
Changes caused by one drug in the absorption, distribution, metabolism or excretion of another may lead to a pharmacokinetic adverse drug interaction (DN Juurlink et al, JAMA 2003; 289:1652). Additive drug interactions, such as vasodilation caused by both sildenafil (Viagra) and nitrates, can also have adverse effects.
Xanax XR for Panic Disorder
The Medical Letter on Drugs and Therapeutics • May 26, 2003; (Issue 1157)
The FDA has approved an extended-release (XR) formulation of the benzodiazepine alprazolam (Xanax XR - Pfizer) for treatment of panic disorder, with or without agoraphobia. The new formulation is intended to...
The FDA has approved an extended-release (XR) formulation of the benzodiazepine alprazolam (Xanax XR - Pfizer) for treatment of panic disorder, with or without agoraphobia. The new formulation is intended to reduce the need for frequent dosing and problems of interdose anxiety. This review describes the effectiveness of the extended-release formulation, as well as sections on dependence, abuse and withdrawal, adverse effects, and drug interactions. The review concludes with an overall assessment of the drug's efficacy and cost.
Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • May 1, 2003; (Issue 9)
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases...
Treatment of epilepsy should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures continue and further dosage increases appear inadvisable because of adverse effects, most Medical Letter consultants generally prescribe at least one and sometimes a second alternative drug as monotherapy before considering use of two drugs at the same time. Most antiepileptic drugs initially approved by the FDA only for adjunctive therapy are probably also effective as monotherapy. Many of the drugs used to treat epilepsy interact with each other (see table beginning on page 63) and with other drugs; for interactions with other drugs, see The Medical Letter Handbook of Adverse Drug Interactions, 2003. The treatment of status epilepticus is not included here.
Aripiprazole (Abilify) for Schizophrenia
The Medical Letter on Drugs and Therapeutics • February 17, 2003; (Issue 1150)
Aripiprazole (Abilify - Bristol-Myers Squibb/Otsuka), a quinolinone derivative, has been approved by the FDA for treatment of...
Aripiprazole (Abilify - Bristol-Myers Squibb/Otsuka), a quinolinone derivative, has been approved by the FDA for treatment of schizophrenia.
Generic drugs
The Medical Letter on Drugs and Therapeutics • October 14, 2002; (Issue 1141)
When patents expire on brand-name drugs and generic formulations become available, patients and managed care organizations may express a preference for the lower-cost generics. Are they equivalent to the...
When patents expire on brand-name drugs and generic formulations become available, patients and managed care organizations may express a preference for the lower-cost generics. Are they equivalent to the brand-name product?
Valproate and Other Anticonvulsants For Psychiatric Disorders
The Medical Letter on Drugs and Therapeutics • December 11, 2000; (Issue 1094)
Anticonvulsants are now widely used for treatment of psychiatric illnesses, particularly bipolar disorder. Lithium is the standard drug for treatment of bipolar disorder, but it can cause severe toxicity, serum...
Anticonvulsants are now widely used for treatment of psychiatric illnesses, particularly bipolar disorder. Lithium is the standard drug for treatment of bipolar disorder, but it can cause severe toxicity, serum concentrations must be monitored, and it is not effective in some patients.
Zonisamide (Zonegran) For Epilepsy
The Medical Letter on Drugs and Therapeutics • October 2, 2000; (Issue 1089)
Zonisamide (Zonegran - Elan Pharma), a sulfonamide chemically unrelated to other antiepileptic drugs, has been approved by the FDA for adjunctive use in adults with partial seizures. Zonisamide has been...
Zonisamide (Zonegran - Elan Pharma), a sulfonamide chemically unrelated to other antiepileptic drugs, has been approved by the FDA for adjunctive use in adults with partial seizures. Zonisamide has been available in Japan for more than 10 years.
Pantroprazole (Protonix)
The Medical Letter on Drugs and Therapeutics • July 24, 2000; (Issue 1083)
Pantoprazole, the fourth benzimidazole proton pump inhibitor to become available in the United States, has been marketed for short-term oral treatment of erosive gastroesophageal reflux disease...
Pantoprazole, the fourth benzimidazole proton pump inhibitor to become available in the United States, has been marketed for short-term oral treatment of erosive gastroesophageal reflux disease (GERD).
Two New Drugs for Epilepsy
The Medical Letter on Drugs and Therapeutics • April 17, 2000; (Issue 1076)
Oxcarbazepine, which is chemically similar to carbamazepine, and levetiracetam, a pyrrolidine acetamide chemically unrelated to other antiepileptic drugs, are the sixth and seventh drugs approved by the US Food...
Oxcarbazepine, which is chemically similar to carbamazepine, and levetiracetam, a pyrrolidine acetamide chemically unrelated to other antiepileptic drugs, are the sixth and seventh drugs approved by the US Food and Drug Administration in the last five years for oral use in partial seizures.
Generic drugs
The Medical Letter on Drugs and Therapeutics • May 21, 1999; (Issue 1053)
When patents expire on brand-name drugs, generic formulations become available that often cost much less. Some physicians, however, hesitate to prescribe the less expensive drug because of concerns about the...
When patents expire on brand-name drugs, generic formulations become available that often cost much less. Some physicians, however, hesitate to prescribe the less expensive drug because of concerns about the quality of generic formulations.
Citalopram for Depression
The Medical Letter on Drugs and Therapeutics • December 4, 1998; (Issue 1041)
Citalopram hydrobromide (Celexa - Forest/Parke-Davis), a selective serotonin reuptake inhibitor (SSRI) available in Europe since 1989, has now been approved by the US Food and Drug Administration (FDA) for...
Citalopram hydrobromide (Celexa - Forest/Parke-Davis), a selective serotonin reuptake inhibitor (SSRI) available in Europe since 1989, has now been approved by the US Food and Drug Administration (FDA) for treatment of depression. It is being advertised as having a 'favorable side-effect profile.'
Drugs for Pain
The Medical Letter on Drugs and Therapeutics • August 14, 1998; (Issue 1033)
Three types of analgesic drugs are available: first, non-opioids, including aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; second, opioids; and third, some drugs not usually...
Three types of analgesic drugs are available: first, non-opioids, including aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; second, opioids; and third, some drugs not usually thought of as analgesics, which act as adjuvants when given with NSAIDs or opioids, or have analgesic activity of their own in some types of pain.
Systemic Antifungal Drugs
The Medical Letter on Drugs and Therapeutics • September 12, 1997; (Issue 1009)
The drugs of choice for treatment of deep fungal infections are listed in the table below. Some of the indications and dosages recommended here have not been approved by the...
The drugs of choice for treatment of deep fungal infections are listed in the table below. Some of the indications and dosages recommended here have not been approved by the FDA.
Bupropion (Zyban) for Smoking Cessation
The Medical Letter on Drugs and Therapeutics • August 15, 1997; (Issue 1007)
Bupropion hydrochloride, currently available as an antidepressant (Wellbutrin - Medical Letter, 31:97, 1989; Wellbutrin SR), is now being marketed in a sustainedrelease formulation as Zyban (Glaxo Wellcome)...
Bupropion hydrochloride, currently available as an antidepressant (Wellbutrin - Medical Letter, 31:97, 1989; Wellbutrin SR), is now being marketed in a sustainedrelease formulation as Zyban (Glaxo Wellcome) for use as an aid in smoking cessation.
Topiramate for Epilepsy
The Medical Letter on Drugs and Therapeutics • May 23, 1997; (Issue 1001)
Topiramate (Topamax - Ortho-McNeil) has been approved by the US Food and Drug Administration (FDA) for oral use as an adjunct to other drugs in adult patients with partial seizures. Since this diagnostic...
Topiramate (Topamax - Ortho-McNeil) has been approved by the US Food and Drug Administration (FDA) for oral use as an adjunct to other drugs in adult patients with partial seizures. Since this diagnostic category includes the largest number of patients with refractory epilepsy, new drugs with antiepileptic activity are usually tried first for this indication. Topiramate (toe pyre' a mate) is a structurally unique agent chemically related to the D-enantiomer of fructose.
Drugs for Psychiatric Disorders
The Medical Letter on Drugs and Therapeutics • April 11, 1997; (Issue 998)
The number of new drugs marketed for psychiatric indications has increased sharply in recent years. The recommendations in this article are based on the results of controlled trials and on the experience and...
The number of new drugs marketed for psychiatric indications has increased sharply in recent years. The recommendations in this article are based on the results of controlled trials and on the experience and opinions of Medical Letter consultants. Interactions with other drugs can be found in The Medical Letter Handbook of Adverse Drug Interactions, 1997.
Zafirlukast for Asthma
The Medical Letter on Drugs and Therapeutics • December 20, 1996; (Issue 990)
Zafirlukast (za fir loo kast; Accolate - Zeneca), the first leukotriene receptor anta-gonist approved by the US Food and Drug Administration, is now being heavily promoted for oral maintenance treatment of...
Zafirlukast (za fir loo kast; Accolate - Zeneca), the first leukotriene receptor anta-gonist approved by the US Food and Drug Administration, is now being heavily promoted for oral maintenance treatment of chronic asthma in patients more than 12 years old. It is not recommended for treatment of acute asthma.
Drugs Past Their Expiration Date
The Medical Letter on Drugs and Therapeutics • July 19, 1996; (Issue 979)
Physicians and pharmacists are often asked if patients can use drugs after their expiration date. Pharmaceutical companies, because of legal restrictions and liability concerns, will not sanction such use and...
Physicians and pharmacists are often asked if patients can use drugs after their expiration date. Pharmaceutical companies, because of legal restrictions and liability concerns, will not sanction such use and may not even comment on the safety or effectiveness of using their products beyond the date on the label.
Systemic Antifungal Drugs
The Medical Letter on Drugs and Therapeutics • February 2, 1996; (Issue 967)
The drugs of choice for treatment of deep fungal infections are listed in the table on page 101. Some of the indications and dosages recommended here have not been approved by the US Food and Drug...
The drugs of choice for treatment of deep fungal infections are listed in the table on page 101. Some of the indications and dosages recommended here have not been approved by the US Food and Drug Administration. More detailed guidelines are available from the Infectious Diseases Society of America (J Sobel et al, Clin Infect Dis, volume 30, April 2000).
Itraconazole for Onychomycosis
The Medical Letter on Drugs and Therapeutics • January 19, 1996; (Issue 966)
Itraconazole (Sporanox - Janssen), an oral antifungal triazole that has been available in the USA since 1992 for treatment of deep fungal infections (Medical Letter, 35:7, 1993), is now being marketed for...
Itraconazole (Sporanox - Janssen), an oral antifungal triazole that has been available in the USA since 1992 for treatment of deep fungal infections (Medical Letter, 35:7, 1993), is now being marketed for treatment of dermatophyte infections of the toenails, with or without fingernail involvement.
Lamotrigine For Epilepsy
The Medical Letter on Drugs and Therapeutics • March 17, 1995; (Issue 944)
Lamotrigine (la mo tri jeen; Lamictal - Burroughs Wellcome), a phenyltriazine derivative, has been approved by the US Food and Drug Administration for use in addition to other antiepileptic drugs in adults...
Lamotrigine (la mo tri jeen; Lamictal - Burroughs Wellcome), a phenyltriazine derivative, has been approved by the US Food and Drug Administration for use in addition to other antiepileptic drugs in adults with partial seizures. Since this diagnostic category includes the largest number of patients with intractable epilepsy, new drugs with antiepileptic activity are usually tried first for this indication. Lamotrigine was first marketed abroad in 1990 and is now available in more than 50 other countries.
Fluvoxamine for Obsessive-Compulsive Disorder
The Medical Letter on Drugs and Therapeutics • February 17, 1995; (Issue 942)
Fluvoxamine (Luvox - Solvay), a selective serotonin reuptake inhibitor (SSRI), has been approved for treatment of obsessive-compulsive disorder (OCD) by the US Food and Drug Administration. Fluoxetine...
Fluvoxamine (Luvox - Solvay), a selective serotonin reuptake inhibitor (SSRI), has been approved for treatment of obsessive-compulsive disorder (OCD) by the US Food and Drug Administration. Fluoxetine (Prozac), another SSRI antidepressant, and clomipramine (Anafranil), a tricyclic antidepressant that also inhibits serotonin reuptake, are the only other drugs available for this indication in the USA. Antidepressants that do not inhibit serotonin reuptake have not been effective for treatment of this condition.
Valproate for Bipolar Disorder
The Medical Letter on Drugs and Therapeutics • August 19, 1994; (Issue 929)
Although lithium (Eskalith, and others) is the standard treatment for bipolar (manic-depressive) disorder, 20% to 40% of patients do not respond adequately or cannot tolerate its adverse effects (Medical...
Although lithium (Eskalith, and others) is the standard treatment for bipolar (manic-depressive) disorder, 20% to 40% of patients do not respond adequately or cannot tolerate its adverse effects (Medical Letter, 33:43, 1991). Results of recent studies suggest that valproate (Depakene - valproic acid; Depakote - divalproex sodium), a widely used anticonvulsant (Medical Letter, 31:1, 1989), might be an effective alternative. Other anticonvulsants, particularly carbamazepine (Tegretol, and others), have also been used as second-line drugs for treatment of mania and other psychiatric disorders (C Van Valkenburg et al, Drugs, 44:326, 1992; PE Keck, Jr et al, J Neuropsychiatry Clin Neurosci, 4:395, 1992).
LAAM - Long-Acting Methadone for Treatment of Heroin Addiction
The Medical Letter on Drugs and Therapeutics • June 10, 1994; (Issue 924)
Methadone, an opioid agonist that can be taken orally, has been used for maintenance treatment for many years in the USA (DM Novick et al, Drug Alcohol Depend, 33:235, 1993). Last year, the US Food and Drug...
Methadone, an opioid agonist that can be taken orally, has been used for maintenance treatment for many years in the USA (DM Novick et al, Drug Alcohol Depend, 33:235, 1993). Last year, the US Food and Drug Administration approved the distribution and use of L-alpha-acetyl-methadol (LAAM; ORLAAM - Bio Development Corporation, McLean, VA), a long-acting congener of methadone. LAAM, like methadone, will be available for this indication only through federal and state-regulated treatment programs.
Gabapentin - A New Anticonvulsant
The Medical Letter on Drugs and Therapeutics • April 29, 1994; (Issue 921)
Gabapentin (Neurontin - Parke-Davis), a cyclohexane acetic acid derivative, has been approved by the US Food and Drug Administration for use in addition to other antiepileptic drugs in patients with partial...
Gabapentin (Neurontin - Parke-Davis), a cyclohexane acetic acid derivative, has been approved by the US Food and Drug Administration for use in addition to other antiepileptic drugs in patients with partial (focal) seizures with or without secondary generalization. Since this diagnostic category includes the largest number of patients with intractable epilepsy, new drugs with antiepileptic activity are generally tried first for this indication.
Felbamate
The Medical Letter on Drugs and Therapeutics • November 26, 1993; (Issue 910)
Felbamate (Felbatol - Wallace Laboratories), a phenyl dicarbamate structurally similar to meprobamate (Equanil, and others), was recently approved by the US Food and Drug Administration for use alone or with...
Felbamate (Felbatol - Wallace Laboratories), a phenyl dicarbamate structurally similar to meprobamate (Equanil, and others), was recently approved by the US Food and Drug Administration for use alone or with other drugs in adults with partial seizures with or without secondary generalization. It was also approved for use in addition to other drugs in children with the multiple types of seizures associated with the Lennox-Gastaut syndrome, a severe epileptic encephalopathy.
Clozapine
The Medical Letter on Drugs and Therapeutics • February 19, 1993; (Issue 890)
Clozapine (Clozaril - Sandoz), an antipsychotic drug, was first marketed in the USA three years ago (Medical Letter, 32:3, 1990). Because of its hematological toxicity, the US Food and Drug Administration...
Clozapine (Clozaril - Sandoz), an antipsychotic drug, was first marketed in the USA three years ago (Medical Letter, 32:3, 1990). Because of its hematological toxicity, the US Food and Drug Administration approved the drug only for patients with schizophrenia who cannot tolerate or do not respond to standard antipsychotic drugs.
Itraconazole
The Medical Letter on Drugs and Therapeutics • January 22, 1993; (Issue 888)
Itraconazole (Sporanox - Janssen), an antifungal triazole, has been approved by the US Food and Drug Administration (FDA) for oral treatment of histoplasmosis and blastomycosis. These two endemic mycoses...
Itraconazole (Sporanox - Janssen), an antifungal triazole, has been approved by the US Food and Drug Administration (FDA) for oral treatment of histoplasmosis and blastomycosis. These two endemic mycoses occur both in normal hosts and in immunocompromised patients, such as those with AIDS (RW Bradsher, Clin Infect Dis, 14:S82, 1992; LJ Wheat, Clin Infect Dis, 14:S91, 1992).
Drugs for Pain
The Medical Letter on Drugs and Therapeutics • January 8, 1993; (Issue 887)
Three types of analgesic drugs are available in the USA: first, aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; second, opioids; and third, drugs not usually thought of as...
Three types of analgesic drugs are available in the USA: first, aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen; second, opioids; and third, drugs not usually thought of as analgesics, which act as adjuvants when given with NSAIDs or opioids, or have analgesic activity of their own in some types of pain. (American Pain Society, Principles of analgesic Use, 3rd ed, Skokie, illinois: American pain society, 1992).
Doxacurium
The Medical Letter on Drugs and Therapeutics • July 26, 1991; (Issue 849)
Doxacurium (Nuromax - Burroughs Wellcome), a new, long-acting, nondepolarizing neuromuscular blocking agent, is now available in the USA for use as a skeletal muscle relaxant during general anesthesia and for...
Doxacurium (Nuromax - Burroughs Wellcome), a new, long-acting, nondepolarizing neuromuscular blocking agent, is now available in the USA for use as a skeletal muscle relaxant during general anesthesia and for endotracheal intubation. Although small decreases in heart rate and mean arterial pressure occur in some patients who receive doxacurium, clinical studies have found no adverse cardiovascular effects in patients with heart disease receiving up to three times the usual effective dose (CM Stoops et al, Anesthesiology, 69:365, 1988; DJ Murray et al, Anesthesiology, 69:472, 1988; RS Emmott et al, Br J Anaesth, 65:480, 1990). As with pipecuronium, which it closely resembles in activity, the duration of block is prolonged in patients with renal failure (JN Cashman et al, Br J Anaesth, 64:186, 1990; DR Cook et al, Anesth Analg, 72:145, 1991).
A Subdermal Progestin Implant For Long-Term Contraception
The Medical Letter on Drugs and Therapeutics • March 8, 1991; (Issue 839)
The Norplant System (Wyeth-Ayerst) for subdermal delivery of the synthetic progestin levonorgestrel was recently approved by the US Food and Drug Administration for use as a long-term...
The Norplant System (Wyeth-Ayerst) for subdermal delivery of the synthetic progestin levonorgestrel was recently approved by the US Food and Drug Administration for use as a long-term contraceptive.
Drugs That Cause Pulmonary Toxicity
The Medical Letter on Drugs and Therapeutics • September 21, 1990; (Issue 827)
Some commonly used systemic drugs that may cause pulmonary toxicity are listed in the table below. These adverse effects may sometimes be difficult to distinguish from the underlying disease (JAD Cooper, Jr...
Some commonly used systemic drugs that may cause pulmonary toxicity are listed in the table below. These adverse effects may sometimes be difficult to distinguish from the underlying disease (JAD Cooper, Jr et al, Am Rev Respir Dis, 133:321, 488, 1986). Pulmonary effects that are part of a generalized reaction or are indirect effects of drugs - on respiratory muscles, for example, or on the immune system - are not included here.
Fluoxetine (Prozac) Revisited
The Medical Letter on Drugs and Therapeutics • September 7, 1990; (Issue 826)
In the short time since fluoxetine (Prozac - Lilly) first became available in the USA (Medical Letter, 30:45, 1988), it has become the most frequently prescribed of all antidepressants. Some recent reports,...
In the short time since fluoxetine (Prozac - Lilly) first became available in the USA (Medical Letter, 30:45, 1988), it has become the most frequently prescribed of all antidepressants. Some recent reports, however, have questioned its safety.
Adenosine
The Medical Letter on Drugs and Therapeutics • June 29, 1990; (Issue 821)
Adenosine (Adenocard - Fujisawa), an endogenous purine nucleoside, was recently approved by the US Food and Drug Administration for intravenous treatment of paroxysmal supraventricular tachycardia, including...
Adenosine (Adenocard - Fujisawa), an endogenous purine nucleoside, was recently approved by the US Food and Drug Administration for intravenous treatment of paroxysmal supraventricular tachycardia, including Wolff-Parkinson-White (WPW) syndrome. Adenosine is not approved for and has not been effective in treating atrial flutter, atrial fibrillation, or ventricular tachycardias.
Bupropion For Depression
The Medical Letter on Drugs and Therapeutics • November 3, 1989; (Issue 804)
Bupropion (Wellbutrin - Burroughs Wellcome) was recently marketed in the USA for treatment of depression. First approved by the Food and Drug Administration in late 1985, the drug was withdrawn from the...
Bupropion (Wellbutrin - Burroughs Wellcome) was recently marketed in the USA for treatment of depression. First approved by the Food and Drug Administration in late 1985, the drug was withdrawn from the market in early 1986 because of a high incidence of seizures in one study.