The FDA has required a new warning in the label of the oral selective neurokinin 3 (NK3) receptor antagonist fezolinetant (Veozah) about the risk of hepatoxicity. The label of fezolinetant, which was approved by the FDA in 2023 for treatment of moderate to severe vasomotor symptoms due to menopause, already contained a warning about hepatic transaminase elevations associated with use of the drug.

Temafloxacin (Omniflox - Abbott) and lomefloxacin (Maxaquin - Searle) are the latest fluoroquinolone antimicrobial agents to be approved by the US Food and Drug Administration (FDA) for oral treatment of various infections. Previously marketed include norfloxacin (Noroxin - Medical Letter, 29:25, 1987), ciprofloxacin (Cipro - Medical Letter, 30:11, 1988), and ofloxacin (Floxin - Medical Letter, 33:71, 1991). Norfloxacin is marketed only for treatment of urinary tract infections, and lomefloxacin only for treatment of urinary tract infections and bronchitis known to be caused by...

Some classes of drugs include so many agents that hospital formulary committees, managed care organizations and individual practitioners may find it difficult to choose among them. Fifteen beta-adrenergic receptor antagonists (beta-blockers) are now marketed for systemic use in the USA. One or more have been approved by the FDA for use in hypertension and eight other indications.

Concerns have arisen anew about possible use of biological weapons. The pathogens considered most likely to be used for this purpose are discussed in this article. A good source for additional information is www.usamriid.army.mil/education/bluebook.html.

Azacitidine (Vidaza - Pharmion), a pyrimidine nucleoside analog of cytidine, is the first drug approved by the FDA for treatment of myelodysplastic syndrome (MDS). Azacitidine is incorporated into newly synthesized DNA and inhibits DNA methyltransferase. Hypomethylation of DNA can restore the normal expression of genes critical for cell differentiation.

Uterine artery embolization (UAE) is an increasingly used alternative to surgery for treatment of uterine fibroids.

An injectable extended-release formulation of the opioid-receptor antagonist naltrexone (Vivitrol - Alkermes/Cephalon) has been approved by the FDA for once-monthly use, along with psychosocial support, to maintain abstinence from alcohol. Naltrexone inhibits the rewarding effects of alcohol. Oral naltrexone (Revia, and others) has been approved for treatment of alcohol dependence since 1994, but poor adherence has limited its effectiveness. In the new extended-release (XR) formulation, naltrexone is encapsulated in polylactide-co-glycolide microspheres (similar to absorbable suture material)...

Direct-to-consumer advertisements are urging women to be tested for mutations in BRCA1 and BRCA2 genes, which are the most common known causes of an inherited predisposition to breast and ovarian cancer. Clinically important BRCA mutations have been found in about 2% of Ashkenazi Jewish women, and are estimated to occur in about 1 in 300 to 500 women in the general non-Jewish US population. The prevalence appears to be lower in non-whites.

Aliskiren (Tekturna - Novartis), the first direct renin inhibitor for treatment of hypertension, has been approved for use in a fixed-dose combination with the diuretic hydrochlorothiazide (Tekturna HCT - Novartis). Many angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) are also available in fixed-dose combinations with hydrochlorothiazide (HCTZ).

Phosphonoformic acid or foscarnet (Foscavir - Astra), a synthetic antiviral drug, has now been approved by the US Food and Drug Administration for intravenous (IV) treatment of cytomegalovirus (CMV) retinitis in patients with AIDS. CMV retinitis occurs in up to 30% of patients with AIDS and often causes blindness (MD de Smet and RB Nussenbatt, JAMA, 266:3019, Dec 4, 1991).