one of them i have been taking for ten years. along with some others.no pharma.. no doc for 20 plus years to over see my "health" and i was in the medical society!! hard to do a job you want to tell them all to bug out!!! look for quality supplements that have no additives in them.. i recommend the peoples chemist (TPC),, quite a history. worked for pharma and saw the light... good quality products.