The FDA recently warned that accidental ingestion of the antitussive benzonatate (Tessalon Perles, and others) by children less than 10 years old can be fatal.1 This widely prescribed oral agent, which has been available in the US since 1958, can also cause severe morbidity and death in older children and adults, and not only in overdosage.Benzonatate is a polyglycol derivative structurally related to procaine and tetracaine. It acts peripherally on stretch receptors in the lower respiratory tract to suppress the cough reflex. If the patient chews or sucks the liquid-filled capsules or...

On July 12, 2021, the FDA added a warning to the Fact Sheet for the Johnson & Johnson (Janssen) adenovirus-based COVID-19 vaccine about an increased risk of Guillain-Barré syndrome (GBS) following administration of the product.

The FDA has required the manufacturers of the mRNA COVID-19 vaccines Comirnaty (Pfizer-BioNTech) and Spikevax (Moderna) to revise their labels to include updated information about the risks of myocarditis/pericarditis. The FDA requested that the manufacturers submit the proposed labeling changes or contest the agency's requirement for the safety update by May 17, 2025. As of June 4th, to our knowledge, the labels of Comirnaty and Spikevax have not been updated and neither manufacturer has submitted a rebuttal.

Recombinate (Baxter) and Kogenate (Miles), two recombinant-DNA-derived Factor VIII (rFVIII) preparations, were recently approved for marketing by the US Food and Drug Administration. Clotting factor concentrates are generally prepared from large plasma pools obtained from thousands of donors. Without adequate inactivation of viruses, these concentrates can transmit hepatitis B, hepatitis C, and the human immunodeficiency virus (HIV), among others. The new recombinant products, which include human albumin added as a stabilizer, are claimed to be free of blood-borne viruses.

New 2024-2025 formulations of the mRNA COVID-19 vaccines manufactured by Pfizer/BioNTech (Comirnaty) and Moderna (Spikevax) that more closely target currently circulating variants have been licensed by the FDA for persons ≥12 years old and made available under FDA Emergency Use Authorizations (EUAs) for use in persons 6 months to 11 years old.1-3 A 2024-2025 formulation of the adjuvanted protein subunit COVID-19 vaccine manufactured by Novavax is expected to become available soon for persons ≥12 years old.

Brivaracetam (Briviact – UCB), an analog of levetiracetam (Keppra, and others), has been approved by the FDA for adjunctive treatment of partial-onset seizures in patients ≥16 years old. New drugs for epilepsy are often approved initially only as adjunctive treatment for partial seizures.

On April 13, 2021, the FDA and CDC advised suspending use of the Johnson & Johnson adenovirus-based COVID-19 vaccine while the agencies investigate 6 cases of cerebral venous sinus thrombosis (CVST) and thrombocytopenia that occurred following administration of the vaccine. In an April 14 emergency meeting, the Advisory Committee on Immunization Practices (ACIP) recommended continuing the suspension until more data become available. About 7 million people in the US have received the Johnson & Johnson vaccine.

Cefpodoxime proxetil (Vantin - Upjohn), a new third-generation oral cephalosporin, has been approved for marketing by the US Food and Drug Administration. It is available for twice-daily treatment of pharyngitis, upper and lower respiratory infections, otitis media, urinary tract infections, skin and soft tissue infections, and for single-dose treatment of uncomplicated gonorrhea in men or women and anorectal gonorrhea in women.

Mirabegron (mir a beg’ ron; Myrbetriq [meer BEH trick] – Astellas), a beta-3 adrenergic agonist, has been approved by the FDA for the treatment of overactive bladder. It is the first beta-3 adrenergic agonist to be approved for any indication in the US. Mirabegron has been marketed in Japan since 2011. OnabotulinumtoxinA (Botox) was also recently approved by the FDA for treatment of overactive bladder and will be reviewed in a future issue.

The FDA has approved the mitogen-activated extracellular signal-regulated kinase (MEK) inhibitor cobimetinib (Cotellic – Genentech) for use in combination with the BRAF kinase inhibitor vemurafenib (Zelboraf) for treatment of unresectable or metastatic melanoma with a BRAF V600E or V600K mutation.