Leann Poston, a physician and medical-content expert for Invigor Medical, suggests checking products for the seal from the United States Pharmacopeia (USP). Another thing to check for is the ...

The verification seal holds more weight than a USP claim on the label, which several of the other products we tested had. Multivitamins are generally formulated to provide 100 percent of the ...

About 59 million Americans use some type of vitamins or supplements regularly. But a new study shows some supplements may be ...

Oddly, that was one of few tested products labeled "USP Verified," which indicates that the USP has tested and verified the claimed ingredients, potency, and manufacturing process. Bottom line.