certification is a third-party verification that ensures 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 ...

The brand’s B vitamin count is closest to the National ... As a best practice, look for options with the NSF or USP seals, a GMP-certified or non-GMO seal — and, if on the hunt for an organic ...

Getting the right amount of vitamins ... Certified, which means they meet the health and safety standards set by the National Sanitation Foundation. You could also consider two multivitamins that ...