FDA attempts to stop OTC sales of N-acetyle cysteine, an adjunctive treatment for Covid-19

By Meryl Nass, MD | May 16, 2021 Last July, FDA sent out warning letters to supplement companies, informing them that N-acetyl cysteine (NAC) could no longer be marketed as an ingredient in food supplements, using the justification that it was also a licensed drug. FDA has concluded that NAC products are excluded from the […]