USPlabs executives, others plead guilty to felony charges stemming from marketing unsafe products labeled as supplements but containing DMAA and linked to hepatitis. Blackstone Labs and other firms indicted on felony charges following FDA investigation for marketing DMBA-containing products. "It's all very welcome news, but I'm not sure this is going to change the overall environment," says Pieter Cohen, a physician who advocates for tighter regulation of supplement manufacturing and marketing.

One of the undeclared stimulant ingredients, 2-amino-6-methylheptane, or DMHA, is new on FDA's radar for violative ingredients used in products marketed as dietary supplements, while the other, 1,3-dimethylamylamine, DMAA, has long been a target of agency enforcement in the supplement sector.

Hi-Tech Pharmaceuticals CEO Jared Wheat and an associate face 18 criminal charges in federal court alleging they falsified FDA documents and distributed as supplements products containing steroid ingredient. Wheat is appealing the indictment to federal circuit court.

S.K. Labs VP Sitesh Patel was sentenced for his conviction in an April trial of single counts of conspiracy to defraud FDA and conspiracy to commit mail fraud and three counts of mail fraud. He faced up to 85 years in prison and up to $1.25m in fines.