I believe the large quality
I believe the large quality of Niacin in this product acutely increased my liver enzymes. I emailed customer service and am awaiting a reply on if the research showed this as a side effect. I am a healthcare provider and from what I've found, large amounts of niacin can do this. I hope they can provide me with a refund as I have 3 unopened bottles. Still waiting for a response. . . .