Vitamin D and ED: Buy vitamin D supplements with USP insignia
20 Sept 2022 · 0 min

0:27
Short YouTube advice clip by Anne Truong MD warning that over-the-counter vitamin supplements may be non-potent and contain fillers that impair digestion/absorption. The speaker recommends buying supplements that display the USP insignia (letters U S P) to help ensure the labeled potency and better digestibility.










