NOW Niacin, Double Strength, Flush-Free, is a nutritional supplement. Niacin (Vitamin B-3) is an essential B-complex vitamin. Flush-free niacin contains inositol hexanicotinate, a form of niacin that consists of six molecules of niacin linked to a single inositol molecule. It is slowly broken down in the body to yield free niacin and inositol. This gradual release of niacin allows for true niacin activity without the characteristic niacin flush that many people cannot tolerate.
NOW Niacin, 500 mg, Double Strength, Flush-Free
Ingredients & Nutritional Facts
Nutrition Facts
Serving Size:
1 Veg Capsules
90 servings per container
Amount per serving
| % Daily Value* | ||
| Niacin | 500mg | 3125% |
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.



FREE Shipping On Orders $99+
Over 200,000 Certified Reviewers
Satisfaction Guarantee
Best Customer Rewards Program
Medical Grade Weight Loss Products
24/7/365 Real Live Customer Service
Free Offers & Products On Orders $50+