Flush-Free Niacin
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
| Ingredient | Amount |
|---|---|
| Niacin22 systematic reviews · 99 randomised trials | 500 mg |
| Inositol77 systematic reviews · 126 randomised trials | 135 mg |
Certifications & Testing
Other Ingredients
Rice Flour, Hypromellose, Microcrystalline Cellulose, Stearic Acid, Silicon Dioxide
Recommended Use
Suggested usage: Take 2 capsules daily as needed, with food.
Warnings
Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition (liver problems, stomach ulcers, diabetes, gout, etc.). Keep out of reach of children. Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredient
Frequently Asked Questions
What is NOW Foods Flush-Free Niacin's Formulate score?
NOW Foods Flush-Free Niacin scores 80 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 NOW Foods Flush-Free Niacin worth it?
NOW Foods Flush-Free Niacin scores 80/100 (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 NOW Foods Flush-Free Niacin?
Each serving contains Niacin (500 mg), Inositol (135 mg). Serving size: 2 Veg Capsule(s). 45 servings per container.
How do I take flush-free niacin?
Suggested usage: Take 2 capsules daily as needed, with food.
Who makes Flush-Free Niacin?
Flush-Free Niacin is made by NOW Foods. See Formulate's full grade and product lineup for NOW Foods on its brand page.
Is NOW Foods Flush-Free Niacin third-party tested?
NOW Foods lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free.
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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.