Deficiency is rare. High-dose niacin acts as a lipid drug, not a supplement.
What the evidence supports: altering lipid levels; outcome benefit has not followed.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
Only under medical supervision at therapeutic doses.
Prescribed for specific lipid disorders. Not a self-directed supplement at high doses.
Other supplements:
Run your full list through the interaction check.