Dronedarone (Multaq – Sanofi), an analog of amiodarone, was approved by the FDA in 2009 for oral treatment of paroxysmal or persistent (non-permanent) atrial fibrillation or atrial flutter. Amiodarone (Cordarone, and others) is more effective for this indication, but its use is often limited by its adverse effects, including thyroid and pulmonary toxicity.

The immune checkpoint inhibitor dostarlimab-gxly (Jemperli – GSK) has been approved by the FDA for use in combination with carboplatin and paclitaxel for treatment of adults with mismatch repair deficient (dMMR) or microsatellite instability-high (MSI-H) primary advanced or recurrent endometrial cancer. Dostarlimab was recently granted regular approval for treatment of adults with dMMR recurrent or advanced endometrial cancer that progressed on or following a prior platinum-containing regimen in any setting and who are not candidates for curative surgery or radiation.

Cefdinir (Omnicef - Parke-Davis), a third-generation oral cephalosporin, has been approved by the FDA for treatment of acute sinusitis, otitis media, acute exacerbations of chronic bronchitis, pharyngitis, community-acquired pneumonia and skin infections. Other drugs available for these indications are reviewed in The Medical Letter Handbook of Antimicrobial Therapy, 1998.

Intrauterine devices (IUDs) and the etonogestrel implant are the most effective reversible contraceptive methods available. Hormonal oral contraceptives, patches, rings, and injectables are also effective in preventing pregnancy. When used alone, barrier and behavioral methods generally have higher failure rates than other methods (see Table 1). Selection of a contraceptive method is usually based on patient-specific factors and personal preference

The programmed death receptor-1 (PD-1) blocking antibody pembrolizumab (Keytruda – Merck), which has been available in an IV formulation since 2014 for treatment of various malignancies, has now been approved in a subcutaneous formulation as Keytruda Qlex. Keytruda Qlex is the first immune checkpoint inhibitor to become available in the US that can be administered subcutaneously. It has been approved for 38 of the 41 solid tumor indications that Keytruda is approved for. Keytruda's patent exclusivity expires in 2028.

Retifanlimab-dlwr (Zynyz – Incyte), a programmed death receptor-1 (PD-1) blocking antibody, has received accelerated approval from the FDA for treatment of metastatic or recurrent locally advanced Merkel cell carcinoma (MCC) in adults. Accelerated approval of the drug was based on the response rate and duration of response. Retifanlimab is the third drug to be approved in the US for treatment of MCC; pembrolizumab (Keytruda), a PD-1 blocking antibody, is approved for the same indication as retifanlimab in patients ≥12 years old and avelumab (Bavencio), a programmed death...

The FDA has approved the oral Janus kinase (JAK) inhibitor deuruxolitinib (Leqselvi – Sun) for treatment of severe alopecia areata in adults. Two other oral JAK inhibitors are approved for treatment of severe alopecia areata: baricitinib (Olumiant) is approved for use in adults, and ritlecitinib (Litfulo) is approved for use in patients ≥12 years old.

Ibutilide fumarate (Corvert - Pharmacia & Upjohn), a new antiarrhythmic drug for intravenous use, has been approved by the US Food and Drug Administration for acute termination of atrial fibrillation or flutter of recent onset.

A 0.75% vaginal gel formulation of metronidazole (MetroGel-Vaginal - Curatek) and a 2% vaginal cream formulation of clindamycin phosphate (Cleocin - Upjohn) were recently approved by the US Food and Drug Administration for treatment of bacterial vaginosis. Seven days' treatment with oral metronidazole, 500 mg b.i.d., has been the usual treatment for this condition, with oral clindamycin, 300 mg b.i.d., as an alternative (JL Thomason et al, Am J Obstet Gynecol, 165:1210, 1991).

Paroxetine (Paxil - SmithKline Beecham), a new selective serotonin reuptake inhibitor (SSRI), is now available in the USA. Two other SSRIs, fluoxetine (Prozac - Medical Letter, 30:45, 1988; 32:83, 1990) and sertraline (Zoloft - Medical Letter, 34:47, 1992), were approved previously.