Question
Does Vitamin B3 (niacin / nicotinamide) work?
In context of Vitamin B3 (niacin / nicotinamide)·Promising74/100
Evidence strength for Vitamin B3 (niacin / nicotinamide) is scored 78/100 in our rubric, separate from safety and marketing gap. Human data quality varies by indication and extract. Registry evidence tier: high. Use the evidence score on this page as a directional read, not a substitute for systematic reviews for your specific question.
Full ingredient file
This page is a short answer. Mechanisms, dosing notes, sources, and the rest of the verdict live on the hub for Vitamin B3 (niacin / nicotinamide).
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A few more focused pages for the same ingredient (we keep lists short on purpose).