The FDA has approved the hypoxia-inducible factor prolyl hydroxylase inhibitor (HIF-PHI) vadadustat (Vafseo – Akebia) for oral treatment of anemia due to chronic kidney disease (CKD) in adults who have been on dialysis for at least 3 months. Vadadustat is the second HIF-PHI to be approved in the US for this indication; daprodustat (Jesduvroq) was approved earlier, but it was withdrawn from the US market in 2024 for commercial reasons.

Nabilone, an oral synthetic cannabinoid similar to delta-9-tetrahydrocannabinol (THC), the active ingredient in marijuana, has recently been reintroduced to the US market (Cesamet - Valeant) after a 17-year absence. The previous manufacturer discontinued marketing of the drug for commercial reasons. Nabilone is classified as a Schedule II controlled substance.

Standard approaches to therapy for gastroesophageal reflux disease (GERD) include lifestyle changes, over-the-counter and prescription drugs, and sometimes surgery. Emerging endoscopic anti-reflux procedures that are less invasive than surgery are potential additions to current treatment options. An endoscopicallyguided radiofrequency (RF) energy delivery system, Stretta (Curon Medical), was approved by the FDA for treatment of GERD in 2000.

The FDA has approved semaglutide (Ozempic – Novo Nordisk), a long-acting injectable GLP-1 (glucagon-like peptide-1) receptor agonist, for once-weekly treatment of adults with type 2 diabetes. It is the sixth GLP-1 receptor agonist to be approved in the US.

Rasagiline (Azilect - Teva), a monoamine oxidase-type B (MAO-B) inhibitor, was recently approved by the FDA for once-daily oral treatment of Parkinson's disease (PD). It can be taken alone for treatment of early disease or with levodopa/carbidopa (Sinemet, and others) for advanced disease. Selegiline (Eldepryl, and others), the first MAO-B inhibitor marketed in the US, has been available since 1988; a new lower-dose disintegrating tablet (Zelapar) was recently approved.

Intravenous immunoglobulin (IVIG) has 6 FDA approved indications and is prescribed off-label for many others. How many of these uses are justified is controversial.

Liraglutide (Victoza – Novo Nordisk), a glucagon-like peptide-1 (GLP-1) receptor agonist given by subcutaneous injection, has been approved by the FDA for treatment of patients with type 2 diabetes. It can be used alone or in addition to oral antidiabetic drugs such as metformin (Glucophage, and others) or glimepiride (Amaryl, and others). Liraglutide is not recommended for first-line therapy and is not approved for use with insulin.

View the Table: Treatments Considered for COVID-19