Niacin (Vitamin B3)

  • Maintains lipid levels
  • Promotes healthy skin
  • Prevents cognitive impairments
  • Treats diabetes
  • Prevents pellagra
  • Relieves arthritis
  • Prevents birth defects
  • Treats erectile dysfunction
  • Relieves motion sickness
  • Aids in digestion

Best Niacin

Sale#1 Real Supplements Rated Best in 2020
Nature’s Bounty Niacin 500mg Flush Free, Cellular Energy Support, Supports Nervous System Health, 120 Capsules
9,508 Reviews
Nature’s Bounty Niacin 500mg Flush Free, Cellular Energy Support, Supports Nervous System Health, 120 Capsules
  • CELLULAR ENERGY SUPPORT (1): Niacin, also known as Vitamin B3, is found naturally in foods such as beef, avocados and potatoes and aids in the conversion of food to cellular energy. (1) Nature’s Bounty Niacin offers the energy cellular support you need to fuel your body (1)
  • FLUSH FREE FORMULA: Niacin not only has a wide range of health supporting benefits, but our flush free formula uses Inositol Hexanicotinate, a form of Niacin that is less likely to cause skin flushing
  • SUPPORTS NERVOUS SYSTEM HEALTH (1): Along with providing daily cellular energy support, Niacin supports nervous system health. (1) If you need a daily nervous system supplement, consider adding Nature’s Bounty Niacin to your routine (1)
  • FROM THE TRUSTED WELLNESS EXPERTS: Nature’s Bounty Niacin is a product of 50 years of dedication to quality, consistency and scientific research to make vitamins and nutritional supplements of unrivaled excellence
  • EXCELLENT VALUE COMPARED WITH OTHER TOP BRANDS: Compare Nature’s Bounty products to Bixa Botanical, Na'trition, Women’s Health Network, Organic India, Vimerson Health, Zhou, New Chapter, Baetea, Nature’s Way, BioScience Nutrition, Nature’s Secret, Bio Schwartz, Health Concerns, Nested, Havasu, and OHCO
Sale#2 Real Supplements Rated Best in 2020
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Sustained Release, Nutritional Health, 250 Tablets
2,757 Reviews
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Sustained Release, Nutritional Health, 250 Tablets
  • NIACIN 500 mg TABLETS/VITAMIN B-3: Niacin (Vitamin B-3) is an essential B-group vitamin necessary for good health.
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • SUSTAINED RELEASE TO MINIMIZE FLUSHING: Niacin supplements may sometimes temporarily cause flushing and/or itching, but this sustained release tablet should minimize those symptoms. To further limit these uncomfortable but not dangerous symptoms, take daily and avoid missing doses.
  • CERTIFICATIONS/CLASSIFICATIONS: Soy Free, Made without Gluten, Dairy Free, Egg Free, Nut Free, Kosher, Vegan/Vegetarian
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
Sale#3 Real Supplements Rated Best in 2020
Nutricost Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free
6,215 Reviews
Nutricost Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free
  • Potent 500mg of Niacin (Vitamin B3) Per Capsule
  • Warning: Will Likely Cause "Niacin Flush." For Non-Flush, try Niacinamide. Consuming On An Empty Stomach May Increase Flush Reaction
  • 240 Capsules of immediate release Niacin Per Bottle
  • Non-GMO, Gluten Free, 3rd Party Tested
  • Made in A GMP Compliant, FDA Registered Facility
#4 Real Supplements Rated Best in 2020
Nutricost Niacin (Vitamin B3) 100mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free
485 Reviews
Nutricost Niacin (Vitamin B3) 100mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free
  • 100mg of Niacin (Vitamin B3) Per Capsule
  • Warning: Will Likely Cause "Niacin Flush." For Non-Flush, try Niacinamide. Consuming On An Empty Stomach May Increase Flush Reaction
  • 240 Capsules of immediate release Niacin Per Bottle
  • Non-GMO, Gluten Free, 3rd Party Tested
  • Made in A GMP Compliant, FDA Registered Facility
#5 Real Supplements Rated Best in 2020
Doctor's Best TimeRelease Niacin with niaxtend NonGMO Vegan Gluten Free 500 mg Tablets, 120 Count
2,107 Reviews
Doctor's Best TimeRelease Niacin with niaxtend NonGMO Vegan Gluten Free 500 mg Tablets, 120 Count
  • Real Niacin provides niacin in an 8-hour extended-release form that enables you to enjoy the health benefits of niacin without experiencing the uncomfortable skin flushing that commonly accompanies other forms of niacin
  • Niacin, also known as vitamin B3 or nicotinic acid, supports more than 500 enzymatic reactions that play pivotal roles in metabolism, energy production, and healthy aging
#6 Real Supplements Rated Best in 2020
Life Extension Vitamin B3 Niacin 500 Mg capsules 100.0 Count
1,012 Reviews
Life Extension Vitamin B3 Niacin 500 Mg capsules 100.0 Count
  • Helps to maintain healthy blood pressure.
  • CoQ10-Plus Optimum Heart Health -Irwin Naturals
  • Life Extension - the name physicians and patients trust
  • Help maintain healthy cholesterol and triglyceride levels.
Sale#7 Real Supplements Rated Best in 2020
Nature Made Flush Free Niacin 500 mg, Dietary Supplement for Nervous System Support, 60 Softgels, 60 Day Supply
876 Reviews
Nature Made Flush Free Niacin 500 mg, Dietary Supplement for Nervous System Support, 60 Softgels, 60 Day Supply
  • Nervous system support supplement: contains one 60 count bottle of Nature Made Flush Free Niacin 500 mg softgels for a 60-day supply
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • These Niacin softgels have no side effects of flushing
  • This no flush Niacin 500mg supplement also supports a healthy brain and nervous system
  • Adults, take one Niacin flush free 500 mg supplement daily with water and a meal
Sale#8 Real Supplements Rated Best in 2020
Source Naturals Niacin, Vitamin B-3 100 mg Dietary Supplement - 250 Tablets
598 Reviews
Source Naturals Niacin, Vitamin B-3 100 mg Dietary Supplement - 250 Tablets
  • SOURCE NATURALS BENEFITS. Niacin plays an essential role in the activities of various enzymes involved in the metabolism of carbohydrates and fats, the functioning of the nervous and digestive systems, the manufacturing of sex hormones, and maintenance of healthy skin.
  • SUGGESTED USE. 1 Tablet daily.
  • SUITABLE FOR VEGETARIANS. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
  • TRUSTED FOR OVER 35 YEARS. Source Naturals was created in 1982 by CEO Ira Goldberg to support each individual's potential to enjoy optimal health.
  • MANUFACTURED IN THE USA. Our facility is located in Scotts Valley California.
#9 Real Supplements Rated Best in 2020
Niacin Flush Free 500mg | 220 Capsules | Non-GMO and Gluten Free Essential Vitamin | by Carlyle
34 Reviews
Niacin Flush Free 500mg | 220 Capsules | Non-GMO and Gluten Free Essential Vitamin | by Carlyle
  • ESSENTIAL VITAMIN: Make the most of Vitamin B3 Niacin with this premium flush free formula!
  • MAXIMUM STRENGTH: Delivers 400 mg of Niacin plus 100 mg of Inositol in each quick-release capsule
  • ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living
  • CARLYLE MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Artificial Flavor, Preservatives & Non-GMO
#10 Real Supplements Rated Best in 2020
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Flush-Free, Double Strength, Nutritional Health, 90 Veg Capsules
1,550 Reviews
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Flush-Free, Double Strength, Nutritional Health, 90 Veg Capsules
  • DOUBLE STRENGTH 500 mg VEGGIE CAPSULES/FLUSH-FREE: 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.
  • NUTRITIONAL HEALTH: Niacin (vitamin B-3) is an essential B-Complex vitamin.
  • CERTIFICATIONS/CLASSIFICATIONS: Vegan/Vegetarian, Made without Gluten, Non-GMO
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
Sale#11 Real Supplements Rated Best in 2020
Rugby Niacin 500 mg 1000 Tabs
1,966 Reviews
Rugby Niacin 500 mg 1000 Tabs
  • 500 mg tablets
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Promotes healthy tissues
  • Maintains a healthy lipid balance
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
Sale#12 Real Supplements Rated Best in 2020
BlueBonnet Niacin 100 mg Vegetable Capsules, 90 Count ('743715004597)
520 Reviews
BlueBonnet Niacin 100 mg Vegetable Capsules, 90 Count ('743715004597)
  • Contains 100 mg of Niacin in vegetable capsules
  • Nutritional Health Cardiovascular Support
  • 90 Vegetable Capsules, 90 Servings
  • Soy-Free, Gluten-Free, Non-GMO, Kosher Certified, Dairy-Free, Vegan
  • Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of corn, yeast, gluten, barley, rice, sodium and sugar.
#13 Real Supplements Rated Best in 2020
ENDUR-ACIN Niacin - Vitamin B3 Niacin 500mg Extended Release & Low-Flush, 200 Tablets - Supports Cholesterol Balance & Heart Health - Endurance Products
1,273 Reviews
ENDUR-ACIN Niacin - Vitamin B3 Niacin 500mg Extended Release & Low-Flush, 200 Tablets - Supports Cholesterol Balance & Heart Health - Endurance Products
  • LOW-FLUSH NIACIN: Each Endur-Acin tablet contains 500mg of niacin as nicotinic acid (vitamin B-3) in a vegetable wax matrix (tablet core) for an extended release over 6-8 hours.
  • HEART HEALTH AND CHOLESTEROL BALANCE: Backed by clinical research and may help maintain healthy cholesterol levels within the normal range.*
  • OPTIMAL ABSORPTION & MAXIMUM EFFECTIVENESS: The proprietary vegetable-based wax matrix melts at body temperature to slowly release nutrients over 6-8 hours, mimicking how your body processes food. This minimizes side effects and digestive upset.*
  • FREE OF COMMON ALLERGENS: Vegan/Vegetarian safe. No milk, egg, fish, shellfish, tree nuts, peanuts, wheat, corn, yeast, or soy. Gluten-free. No salt, sugar, starch, artificial flavorings, or preservatives.
  • MEETS STRICT GOOD MANUFACTURING PRACTICES: Manufactured and packaged in the Pacific Northwest, USA at an FDA registered facility. Family-owned and operated since 1978.
#14 Real Supplements Rated Best in 2020
B3 Plain Niacin - 500mg Immediate Release Vitamin B-3 with Flush - Nicotinic Acid 100 Tablets - Non-GMO, Vegan, Gluten Free - Endurance Products
520 Reviews
B3 Plain Niacin - 500mg Immediate Release Vitamin B-3 with Flush - Nicotinic Acid 100 Tablets - Non-GMO, Vegan, Gluten Free - Endurance Products
  • EACH SERVING CONTAINS 500mg of immediate-release nicotinic acid (crystalline niacin, vitamin B-3) with our proprietary vegetable-based wax matrix tablet core that slows delivery.
  • TABLETS DISSOLVE MORE SLOWLY than regular formulas, gradually releasing nicotinic acid in about an hour instead of all at once.
  • HEART HEALTH AND CHOLESTEROL BALANCE.* Nicotinic acid is the only form of niacin with targeted benefits. Other "flush free" forms of niacin have not been clinically shown to benefit heart health.*
  • FREE OF COMMON ALLERGENS: Vegan/Vegetarian safe. No milk, egg, fish, shellfish, tree nuts, peanuts, wheat, corn, yeast, or soy. Gluten-free. No salt, sugar, starch, artificial flavorings, or preservatives.
  • MEETS STRICT GOOD MANUFACTURING PRACTICES: Manufactured and packaged in the Pacific Northwest, USA at an FDA registered facility. Family-owned and operated since 1978.
Sale#15 Real Supplements Rated Best in 2020
21st Century Niacin 500 mg Prolonged Release Tablets, 100 Count (27474)
249 Reviews
21st Century Niacin 500 mg Prolonged Release Tablets, 100 Count (27474)
  • Allergen information: mustard_free
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Compare to active ingredient in slo niacin
  • No added sugar, salt, yeast, preservatives, artificial flavors or colors
  • This product is not intended to diagnose, treat, cure or prevent any disease.
#16 Real Supplements Rated Best in 2020
Swanson Niacin (Vitamin B3) - Vitamin Supplement Supporting Heart Health and Carbohydrate Metabolism - Promotes Natural Energy Production - (250 Tablets, 100mg NE Each)
426 Reviews
Swanson Niacin (Vitamin B3) - Vitamin Supplement Supporting Heart Health and Carbohydrate Metabolism - Promotes Natural Energy Production - (250 Tablets, 100mg NE Each)
  • PROMOTES HEART HEALTH: Swanson's premium niacin supplement contains B-vitamin nutrition to promote cardiovascular health by supporting healthy lipid levels. Our vitamin B3 supplement is a safe, natural way to take care of your heart!
  • NATURAL ENERGY SUPPORT: These niacin capsules support carbohydrate metabolism, helping to supply the whole body with energy needed for everyday physical function. Our supplement delivers 100mg NE per capsule.
  • DOSAGE INSTRUCTIONS: Our wellness supplements offer everyday solutions for an enhanced mind, body, and home using only the purest ingredients. For best results, take one capsule per day with food and water.
  • OUR QUALITY COMMITMENT: For nearly 50 years, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in our GMP certified facilities, and our purity and potency testing includes independent third-party labs.
  • MONEY BACK GUARANTEE: At Swanson, we guarantee that every health product is made from the purest, freshest nutrients. If you aren't satisfied with any product(s) purchased within the last 30 days, return the unused portion to us for a full refund.
Sale#17 Real Supplements Rated Best in 2020
Niacin Vitamin B3 1000mg | 100 Capsules | with Flushing | Non-GMO, and Gluten Free Supplement | by Horbaach
732 Reviews
Niacin Vitamin B3 1000mg | 100 Capsules | with Flushing | Non-GMO, and Gluten Free Supplement | by Horbaach
  • NIACIN SUPPLEMENT: Receive exceptional purity, potency, and quality from this essential vitamin!
  • HIGH POTENCY: Delivers 1,000 mg of Niacin (as Nicotinic Acid) in each quick-release capsule
  • EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency
  • HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Soy, Milk, Lactose, Artificial Flavor, Preservatives & Non-GMO
#18 Real Supplements Rated Best in 2020
Life Extension No Flush Niacin 640 mg - Flush Free Vitamin B Supplement Pills with Inositol for Healthy Metabolism and Cholesterol Management – Non-GMO, Gluten-Free - 100 Capsules
599 Reviews
Life Extension No Flush Niacin 640 mg - Flush Free Vitamin B Supplement Pills with Inositol for Healthy Metabolism and Cholesterol Management – Non-GMO, Gluten-Free - 100 Capsules
  • ALL THE BENEFITS, NONE OF THE FLUSH - Niacin is called “B3” because it was the third B vitamin to be discovered. Our No Flush Niacin formula offers all the benefits you normally get in a high-quality niacin supplement, including promoting your metabolism health, supporting your cardiovascular system, as well as neurological support. However, one thing you wouldn’t experience is the flushing that can come with some vitamin B3 supplements.
  • MORE FACTS ABOUT NIACIN – Vitamin B3 niacin is a water-soluble nutrient and is absorbed in your intestines. It is crucial to your energy transfer reactions, particularly those that help your body metabolize glucose (sugar), fat and alcohol. Niacin has also been shown to help metabolize the foods you eat, and, like many B vitamins, it promotes healthy cellular energy production.
  • HEALTH BENEFITS OF B3 NIACIN - Niacin has beneficial effects on your blood lipids, helping to maintain your healthy cholesterol levels already within normal range. In addition, vitamin B coenzymes (such as niacin) are crucial to your metabolic pathways that generate cellular energy. Vitamin B3 also promotes a healthy metabolism because this nutrient is required for your body to utilize dietary fats and carbohydrates and metabolize alcohol.
  • INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are non-GMO, gluten-free, and manufactured in the USA—and a Certificate of Analysis is available for every product we produce.
  • LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Our formulations are created using the ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy is achieved.
Sale#19 Real Supplements Rated Best in 2020
Solgar Niacin Vitamin B3 Tablets, 100 mg, 100 Count
682 Reviews
Solgar Niacin Vitamin B3 Tablets, 100 mg, 100 Count
  • B Complex Supplement; Niacin (also known as vitamin B3) is a water-soluble vitamin and is part of the B Complex; This formulation provides 100 mg per serving
  • Energy & Metabolism; Niacin is required for the metabolism of carbohydrates and protein into energy
  • Cardiovascular Health; Niacin supports cardiovascular health, promotes increased blood flow, and supports the health of the nervous system
  • Non-GMO, Gluten, Wheat & Dairy Free; Solgar Niacin is vegan, kosher, and free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives, and color; Suitable for vegetarians
  • The Gold Standard: For over 70 years, Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
#20 Real Supplements Rated Best in 2020
Plain Niacin - 250mg Immediate Release Niacin with Flush (Vitamin B-3) - Nicotinic Acid 100 Tablets - Non-GMO, Vegan, Gluten Free | Endurance Products Company
264 Reviews
Plain Niacin - 250mg Immediate Release Niacin with Flush (Vitamin B-3) - Nicotinic Acid 100 Tablets - Non-GMO, Vegan, Gluten Free | Endurance Products Company
  • EACH SERVING CONTAINS 250mg of immediate-release nicotinic acid (crystalline niacin, vitamin B-3) with our proprietary vegetable-based wax matrix tablet core that slows delivery.
  • TABLETS DISSOLVE MORE SLOWLY than regular formulas, gradually releasing nicotinic acid in about an hour instead of all at once.
  • HEART HEALTH AND CHOLESTEROL BALANCE.* Nicotinic acid is the only form of niacin with targeted benefits. Other "flush free" forms of niacin have not been clinically shown to benefit heart health.*
  • FREE OF COMMON ALLERGENS: Vegan/Vegetarian safe. No milk, egg, fish, shellfish, tree nuts, peanuts, wheat, corn, yeast, or soy. Gluten-free. No salt, sugar, starch, artificial flavorings, or preservatives.
  • MEETS STRICT GOOD MANUFACTURING PRACTICES: Manufactured and packaged in the Pacific Northwest, USA at an FDA registered facility. Family-owned and operated since 1978.

Best 10 Benefits of Niacin

Vitamin B3, also known as niacin, is an essential nutrient required for everyday function. Deficiency in this vitamin can lead to skin problems, memory loss, and even hallucinations or cognitive impairment. On a more positive note, here are ten benefits of regular niacin consumption:

1. Maintains lipid levels

The body needs a healthy balance of lipids, including cholesterol and triglycerides. Niacin promotes low levels of LDL cholesterol and higher levels of HDL cholesterol, and prevents the body from holding on to too many triglycerides.

2. Promotes healthy skin

Is your skin damaged by acne scars or rosacea? Niacin may be able to help. Proper intake nourishes the skin and can reverse damage caused by severe acne and other skin problems, and has even been shown to reduce the risk of skin cancer.

3. Prevents cognitive impairments

Niacin is known for its antidepressant properties and ability to promote brain repair. Aging adults may find niacin beneficial in preventing dementia, Alzheimer’s, schizophrenia, and other cognitive disorders associated with old age.

4. Treats diabetes

This vitamin helps maintain a healthy blood sugar level. Niacin is also useful in preventing diabetes-related conditions such as heart disease.

5. Prevents pellagra

Pellagra is a serious result of niacin deficiency and can only be treated with high doses of the B complexes, the most useful of which is nicotinamide.

6. Relieves arthritis

Niacinamide has been found to reduce join pain and inflammation in patients with osteoarthritis; additionally, it is known to promote muscle growth.

7. Prevents birth defects

Nicotinamide adenine dinucleotide (NAD) is responsible for DNA synthesis. Research has suggested that regular niacin intake by pregnant women ensures the proper function of NAD and prevents maldevelopment and birth defects in unborn children.

8. Treats erectile dysfunction

Niacin acts as a vasodilator, allowing blood flow to the genitals during intercourse, thereby allowing men to achieve and maintain an erection.

9. Relieves motion sickness

Niacin, particularly when taken from papayas, has been shown to be instrumental in reducing motion sickness.

10. Aids in digestion

Vitamin B3 aids in the digestion of fats and carbohydrates; a deficiency can lead to stomachaches, constipation, and other indigestion disorders.


Real Supplements gives you the best Niacin on the market today. Our top-rated lists are fresh and current so you get the best options.

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