The supplement provides just the right amount ... a product meets certain quality standards. Some vitamin brands that are USP certified include NOW Foods, Thorne Research, and Life Extension.

While there may be more rigorously-tested vitamin and supplement products available today than ever before, selecting the ...

“A vegan multivitamin is a dietary supplement free of animal-derived ... Additionally, the brand is GMO-free and USP-verified — criteria our team of medical experts recommend seeking out.

The lab tested three lots of each brand, bought in New York-area stores ... Oddly, that was one of few tested products labeled "USP Verified," which indicates that the USP has tested and verified ...