The FDA has approved Duexis (Horizon), a fixed-dose combination of the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen and the H2-receptor antagonist (H2RA) famotidine, for symptomatic relief of osteoarthritis and rheumatoid arthritis and to decrease the risk of developing gastric and duodenal ulcers in patients at risk for NSAID-associated ulcers. Vimovo, a combination of the NSAID naproxen and the proton pump inhibitor (PPI) esomeprazole, is also approved by the FDA for prevention of NSAID-associated gastric ulcers.

Nizatidine (Axid - Lilly), a new H2-receptor antagonist similar to cimetidine (Tagamet), ranitidine (Zantac) and famotidine (Pepcid), was recently approved by the US Food and Drug Administration for treatment of active duodenal ulcer and for maintenance therapy after healing. Cimetidine, ranitidine and famotidine are also approved for treatment of pathological hypersecretory conditions such as Zollinger- Ellison syndrome; cimetidine is approved in addition for treatment of gastric ulcers.

Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) are common causes of peptic ulcer disease. Patients infected with Helicobacter pylori who take aspirin or another NSAID have an especially high risk. Drugs that have been tried for prevention of ulcers in patients taking NSAIDs including H2-receptor antagonists, proton pump inhibitors (PPIs), aluminum- or magnesium-containing antacids, the prostaglandin misoprostol (Cytotec, and others), and antibiotics to eradicate H. pylori.Click here to view the free full...

View Table 3: Some Drug Interactions with DAAs for HCV Infection

Patients may be asking their physicians about use of histamine H2-receptor antagonists for treatment and prevention of heartburn. Cimetidine and famotidine have recently been released for over-the-counter sale and are being heavily advertised on television and in the print media.

The FDA recently approved the proton pump inhibitor omeprazole magnesium (Prilosec OTC) for over-the-counter use for treatment of frequent heartburn. It will be marketed in late September or early October. Five proton pump inhibitors, including omeprazole, are available by prescription in the US (Medical Letter 2001; 43:36).

View the Comparison Table: H2-Receptor Antagonists and PPIs

Current guidelines recommend use of a proton pump inhibitor (PPI) to decrease the risk of gastrointestinal bleeding in patients taking clopidogrel (Plavix) with aspirin. A recent issue of The Medical Letter considered whether omeprazole (Prilosec, and others) or other PPIs could interfere with the antiplatelet effect of clopidogrel. The conclusion was that patients taking both drugs should probably continue to do so until more data became available. Several new publications require reconsideration of that recommendation.

A recent advertisement for the proton pump inhibitor (PPI) lansoprazole (Prevacid - TAP) suggests that children who cough at night, complain of abdominal pain, refuse to eat, or have a bad taste in their mouths may all have gastroesophageal reflux disease (GERD). A Bunny's Tummy Trouble, a children's book about GERD published by TAP, is now available as a patient handout in pediatricians' waiting rooms. The use of acid-suppressive drugs in infants and children has increased markedly in recent years and many of these drugs are now available in child-friendly formulations. A table in the article...

Omeprazole (Losec - Merck), a new drug that suppresses gastric acid secretion, has been approved by the US Food and Drug Administration for short-term (four to eight weeks) treatment of severe or refractory gastroesophageal reflux and for long-term treatment of pathological hypersecretory conditions such as Zollinger-Ellison syndrome, multiple endocrine adenomas, and systemic mastocytosis. Although widely used abroad for treatment of peptic ulcers, it has not been approved for that indication in the USA.