Niacin is a high-risk supplementwith an RDA of 16 mg and a safe upper limit (UL) of 35 mg per day according to FDA standards. All 3 regional standards agree on these limits. Regular monitoring is strongly recommended when adjusting your intake.
Niacin sits in the B Vitamins category. This page consolidates 3 regional standards, and the numbers are broadly aligned, so the bigger question is whether your total dose stays in range.
For this ingredient, the main task is usually not a binary yes/no question but checking the label dose, your total intake, and possible overlap with the rest of the stack.
High-dose niacin can cause flushing, liver enzyme changes, and other side effects.
| Region | Organization | RDA | Upper Limit (UL) | Unit |
|---|---|---|---|---|
| 🇺🇸 United States | FDA | 16 | 35 | mg |
| 🇪🇺 Europe | EFSA | 16 | 35 | mg |
| 🇦🇺 Australia | TGA | 16 | 35 | mg |
RDA = Recommended Daily Allowance (adequate intake for most adults). UL = Tolerable Upper Intake Level (maximum safe daily amount).
First match your product label against the dose table above, then check whether the known interaction list includes anything in your current stack.
If you are taking multiple supplements, the safest approach is usually to audit the whole stack instead of judging a single bottle in isolation.
The safe upper limit (UL) for Niacin is 35mg per day according to FDA. Exceeding this amount regularly may increase the risk of adverse effects.
The RDA for Niacin is 16mg per day for most adults. This amount is sufficient to meet the needs of 97-98% of healthy individuals.
Check if your supplement stack keeps Niacin within safe limits.
Audit My SupplementsDisclaimer: NutriAudit is a decision-support tool designed to help you review your supplement stack for potential duplicate, conflicting, or excessive ingredients. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your supplement routine, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Based on reference standards from FDA, EFSA, TGA, and MHLW.