Anticonvulsants are now widely used for treatment of psychiatric illnesses, particularly bipolar disorder. Lithium is the standard drug for treatment of bipolar disorder, but it can cause severe toxicity, serum concentrations must be monitored, and it is not effective in some patients.

Rivastigmine tartrate (Exelon - Novartis), a carbamate-based cholinesterase inhibitor, is now being marketed for treatment of patients with dementia due to Alzheimer's disease.

The FDA has approved tislelizumab (Tevimbra – BeiGene), a programmed death receptor-1 (PD-1) blocking antibody, for treatment of unresectable or metastatic esophageal squamous cell cancer in adults who received prior systemic chemotherapy that did not include a programmed death ligand-1 (PD-L1) inhibitor.

Lisdexamfetamine dimesylate (Vyvanse), a prodrug of dextroamphetamine previously approved for treatment of attention-deficit/hyperactivity disorder, has now been approved for treatment of moderate-to-severe binge eating disorder (recurrent episodes of compulsive overeating without purging) in adults.FDA approval of lisdexamfetamine for this indication was based on two unpublished, 12-week trials, summarized in the package insert, that randomized patients with moderate-to-severe binge eating disorder to lisdexamfetamine 30 mg/day, which was titrated to 50 mg or, if needed, 70 mg, or to placebo....

Metformin (Glucophage - Bristol-Myers Squibb), a hypoglycemic agent, was recently marketed in the USA for oral treatment of patients with non-insulin-dependent diabetes mellitus (NIDDM) not adequately controlled by diet alone. Previously marketed in more than ninety countries, including Canada, metformin (dimethylbiguanide) is chemically related to phenformin (phenylethylbiguanide), which was withdrawn from the US market in 1976 because it caused a high incidence of lactic acidosis. In approving metformin, the US Food and Drug Administration stipulated that a post-marketing controlled...

Gastroesophageal reflux disease (GERD) is the most common GI condition encountered in the outpatient setting; it affects about 20% of people in the US.

The FDA has approved a once-weekly extendedrelease formulation of exenatide (Bydureon – Amylin), an injectable glucagon-like peptide-1 (GLP-1) receptor agonist, for treatment of type 2 diabetes.

Chromium is marketed as a dietary supplement, usually containing 20-500 mcg of a chromium salt. It has been promoted for weight loss, muscle building, and for prevention and treatment of diabetes, among other claims. As a dietary supplement, chromium can be sold without proof of efficacy or safety.

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.

Metformin (Glucophage, and others) is generally preferred as the first-line agent for treatment of type 2 diabetes, but most patients subsequently require treatment with more than one drug. Many combination products have been marketed; the latest of these combines saxagliptin with extended-release (ER) metformin as Kombiglyze XR.