Niacin 100 mg
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose
Recommended Use
Suggested Usage: 1 tablet 1-5 times per day or as directed by a health professional.
Warnings
Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding or trying to conceive, or if you are taking medication, have a medical condition or anticipate a surgery. People sensitive to nicotinic acid may experience flushing of the skin that is generally mild and transient. Do not exceed the recommended dose except on the advice of a health prof
Frequently Asked Questions
What is Natural Factors Niacin 100 mg's Formulate score?
Natural Factors Niacin 100 mg scores 91 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Natural Factors Niacin 100 mg worth it?
Natural Factors Niacin 100 mg scores 91/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Natural Factors Niacin 100 mg?
Each serving contains Niacin (100 mg). Serving size: 1 Tablet(s). 90 servings per container.
How do I take niacin 100 mg?
Suggested Usage: 1 tablet 1-5 times per day or as directed by a health professional.
Who makes Niacin 100 mg?
Niacin 100 mg is made by Natural Factors. See Formulate's full grade and product lineup for Natural Factors on its brand page.
Is Natural Factors Niacin 100 mg third-party tested?
Natural Factors lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free, Sugar-Free.
Related Supplements
Track niacin 100 mg in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is Niacin 100 mg right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.