Famciclovir (Famvir - SmithKline Beecham) is now available in the USA for oral treatment of acute uncomplicated herpes zoster (shingles). The manufacturer claims that use of the drug reduces the duration of postherpetic neuralgia. Famciclovir is similar to acyclovir (Zovirax - Burroughs Wellcome), which has been the drug of choice for treatment of varicella-zoster and herpes simplex virus infections (Medical Letter, 36:27, 1994).

Two cholesterol-lowering margarines have been marketed in the USA.

Patients with lung cancer may be asking their physicians about gefitinib (ge fi' tye nib; ZD1839; Iressa -- AstraZeneca), because it has been the subject of positive coverage in the media. An inhibitor of the epidermal growth factor receptor (EGFR) tyrosine kinase, this oral drug has not been approved by the FDA, but is in clinical trials in the US for treatment of non-small cell lung cancer (NSCLC) and some other solid tumors. Iressa was recently approved in Japan, and is available from the manufacturer on a "compassionate-use" basis in the US (800-236-9933).

Trospium chloride (Sanctura - Indevus/Odyssey) has been approved by the FDA for treatment of overactive bladder with symptoms of urge urinary incontinence, urgency and urinary frequency. It has been available in Europe for many years.

An extended-release formulation of the centrally-acting muscle relaxant cyclobenzaprine (Amrix - Cephalon) has been approved by the FDA for treatment of muscle spasms. Immediate-release (IR) cyclobenzaprine (Flexeril, and others) has been available since 1977.

Health care professionals may be asked about lowvoltage electronic devices now being used to diagnose and/or treat a number of health problems. Most are galvanometers that measure skin resistance to an electric current. The FDA classifies "devices that use resistance measurements to diagnose and treat various diseases" as Class III devices that require FDA approval prior to marketing. None of the devices reviewed here has such approval.

The FDA has approved Eloctate (Biogen), a recombinant factor VIII Fc fusion protein with an extended half-life, for use in adults and children with hemophilia A. Eloctate is indicated for control and prevention of bleeding episodes, perioperative management, and routine prophylaxis to prevent or reduce the frequency of bleeding episodes. It is the first antihemophilic factor VIII Fc fusion protein to be approved for hemophilia A.

Deflazacort (Emflaza – PTC Therapeutics), an oral corticosteroid, has been approved by the FDA for treatment of Duchenne muscular dystrophy (DMD) in patients ≥5 years old. It has been available outside the US for many years. Deflazacort is the second drug to be approved for treatment of DMD; eteplirsen (Exondys 51), an antisense oligonucleotide approved for IV administration in patients with mutations of the dystrophin gene amenable to exon 51 skipping (about 13% of DMD cases), was the first.

Caplacizumab-yhdp (Cablivi – Sanofi /Genzyme), a von Willebrand factor-directed antibody fragment, has been approved by the FDA for use in combination with plasma exchange and immunosuppressive therapy for treatment of immune-mediated thrombotic thrombocytopenic purpura (iTTP; formerly called acquired thrombotic thrombocytopenic purpura [aTTP]) in adults. It is the first drug to be approved in the US for this indication.

The oral kinase inhibitor capivasertib (Truqap – AstraZeneca), a first-in-class AKT inhibitor, has been approved by the FDA for use in combination with the selective estrogen receptor degrader (SERD) fulvestrant (Faslodex, and generics) for treatment of hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative, locally advanced or metastatic breast cancer in adults with one or more PIK3CA/AKT1/PTEN-alterations who had disease progression on at least one endocrine-based regimen for metastatic disease or recurrence on or within 12 months of completing...