Rasagiline (Azilect - Teva), a monoamine oxidase-type B (MAO-B) inhibitor, was recently approved by the FDA for once-daily oral treatment of Parkinson's disease (PD). It can be taken alone for treatment of early disease or with levodopa/carbidopa (Sinemet, and others) for advanced disease. Selegiline (Eldepryl, and others), the first MAO-B inhibitor marketed in the US, has been available since 1988; a new lower-dose disintegrating tablet (Zelapar) was recently approved.

The severity and rapid spread of COVID-19 (caused by SARS-CoV-2) have raised questions about the use of some drugs in patients with the disease and whether currently available drugs could be effective in treating it. Definitive answers are lacking, but some recommendations can be made. For additional information on specific drugs, see our table Some Drugs Being Considered for Treatment of COVID-19.

Attention-deficit/hyperactivity disorder (ADHD) is a chronic neurodevelopmental disorder that has been diagnosed in up to 10% of school-age children in the US and frequently persists into adulthood. A study in a large Danish cohort found that ADHD was associated with higher mortality rates in children, adolescents, and adults, mainly due to accidents. Pharmacologic treatment of ADHD in children has been reported to decrease the risk of substance abuse in adolescents, and use of ADHD medications in adults has been associated with a reduced risk of serious traffic accidents and...

Mefloquine hydrochloride (Lariam - Roche), a new antimalarial drug chemically related to quinine, has been approved by the US Food and Drug Administration (FDA) for prevention and treatment of Plasmodium falciparum and P. vivax malaria.

Repaglinide (Prandin - Novo Nordisk) is a new oral glucose-lowering agent for treating type 2 diabetes (formerly called non-insulin-dependent diabetes mellitus or NIDDM). It has been approved by the FDA for monotherapy or for use in combination with metformin.

The FDA has approved a new low-dose estrogen patch (Menostar - Berlex) for prevention of osteoporosis in postmenopausal women. Unlike other estrogen patches, it is not approved for treatment of hot flashes or other menopausal symptoms. Promotional material from the manufacturer suggests that this low dose of estrogen could prevent osteoporosis without some of the adverse effects of higher doses.

The FDA has approved valbenazine (Ingrezza – Neurocrine Biosciences), a vesicular monoamine transporter 2 (VMAT2) inhibitor, for treatment of tardive dyskinesia in adults. It is the first drug to be approved in the US for this indication; two other VMAT2 inhibitors, tetrabenazine (Xenazine, and generics) and deutetrabenazine (Austedo), were approved earlier for treatment of chorea associated with Huntington's disease.

The FDA has approved an estradiol softgel vaginal insert (Imvexxy – TherapeuticsMD) for treatment of postmenopausal women with moderate to severe dyspareunia due to vulvovaginal atrophy (VVA). Imvexxy is the second estradiol vaginal insert to be approved in the US; Vagifem, an intravaginal tablet formulation, was the first. Vagifem and Imvexxy are both available in inserts containing 10 mcg of estradiol; Imvexxy is also available in a 4-mcg strength.

The FDA has approved the nitrofuran antiprotozoal drug nifurtimox (Lampit – Bayer) for treatment of Chagas disease (American trypanosomiasis) in children who weigh ≥2.5 kg. Nifurtimox was previously available in the US only through a CDC-sponsored Investigational New Drug (IND) program.

The FDA has approved pegvisomant (Somavert Pfizer), a growth hormone receptor antagonist, for parenteral treatment of acromegaly in patients who are not candidates for or have had an inadequate response to surgery or other treatment. This review describes the disease of acromegaly and its standard treatment options. Also included are sections on the mechanism of action, pharmacokinetics, adverse effects, drug interactions, and the dosage and cost of pegvisomant. Results of clinical studies are discussed. The conclusion provides an overall assessment of the prospects for this new drug.