Azelastine hydrochloride, a histamine-H1 receptor antagonist, has been marketed as a 0.1% nasal spray (Astelin - Wallace) for treatment of seasonal allergic rhinitis. Corticosteroid and cromolyn sodium nasal sprays are also available for this indication (Medical Letter, 37:5, 1995). Cromolyn sodium (Nasalcrom) has now been approved for over-the-counter use.

Troglitazone (Rezulin - Parke-Davis), the first of a new class of thiazolidinedione derivatives ('glitazones') for diabetes, has been marketed for oral treatment of noninsulin- dependent diabetes mellitus (NIDDM) in patients who take more than 30 units of insulin daily and still have a glycosylated hemoglobin concentration (HbA1c) of 8.5% or higher.

Carvedilol (Coreg - SmithKline Beecham and Boehringer-Mannheim), a betaadrenergic and alpha-adrenergic blocker approved by the FDA for treatment of hypertension in 1995, but not marketed at that time, has now been approved and marketed for treatment of mild or moderate (NYHA class II or III) heart failure stabilized on other drugs. It is being promoted as an add-on drug that reduces the morbidity and mortality of the disease.

Mibefradil dihydrochloride (Posicor - Roche), a chemically distinct nondihydropyridine calcium-channel blocker, has been approved by the US Food and Drug Administration (FDA) and is being heavily promoted as the first T-type calcium-channel blocker for treatment of hypertension and chronic stable angina.

Two new formulations of existing drugs were recently approved by the FDA for treatment of male androgenetic alopecia. Finasteride, a steroid 5alpha-reductase inhibitor previously marketed in a 5-mg tablet as Proscar for treatment of benign prostatic hyperplasia (Medical Letter, 34:83, 1992), has now been approved in a 1-mg tablet as Propecia (Merck) for oral treatment of men with male pattern hair loss. Minoxidil, a peripheral vasodilator used to treat hypertension, was previously available over the counter in a 2% topical solution (Rogaine, and others) for treatment of androgenetic alopecia...

Two new platelet glycoprotein IIb/IIIa receptor antagonists have been approved for marketing by the US Food and Drug Administration (FDA). Eptifibatide (ep ti fi' ba tyde; Integrilin - Cor, Key) is approved for use in acute coronary syndromes (unstable angina or non-Q-wave myocardial infarction) or percutaneous coronary intervention (angioplasty or atherectomy). Tirofiban (tye roe fye' ban; Aggrastat - Merck) is approved for acute coronary syndromes, but not for angioplasty without an acute coronary syndrome. Abciximab (ReoPro), a monoclonal antibody glycoprotein IIb/IIIa receptor...

Rofecoxib, a selective COX-2 inhibitor, has been approved by the FDA for treatment of osteoarthritis, acute pain and menstrual pain.

Perindopril, the tenth angiotensin converting enzyme (ACE) inhibitor to be marketed in the USA, and telmisartan and eprosartan, the fifth and sixth angiotensin receptor blockers, have recently become available for treatment of hypertension.

The FDA has approved a conjugate heptavalent pneumococcal vaccine for prevention of invasive pneumococcal disease in infants and children.

Ophthalmic formulations of ketotifen fumarate (Zaditor), pemirolast potassium (Alamast) and nedocromil sodium (Alocril) have recently been approved by the FDA for use in adults and children with itching of the eyes due to allergic conjunctivitis.