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 Flush Free 500 mg
389 Reviews
Nature's Bounty Niacin Flush Free 500 mg
  • ENERGY SUPPORT: Niacin, part of the B Vitamin family, provides a number of benefits. In addition to supporting heart health & nervous system health, Niacin helps to support energy by aiding in the conversion of food into energy.*
  • HEALTHY SKIN & FLUSH FREE: Vitamin B3, also known as Niacin, can help maintain the overall health of your skin; Not only that, but our flush free formula is less likely to cause flushing, so your healthy, vibrant skin can look and feel its best
  • EVERYDAY HEALTH: Nature's Bounty provides herbal products for a variety of health concerns. Nature's Bounty Niacin is just part of the line of traditional supplements offered to support your health and your body.*
  • NATURE'S BOUNTY, BETTER OFF HEALTHY: Health conscious people have trusted Nature’s Bounty products for decades; Our dedication to quality, consistency, and scientific research has resulted in vitamins and nutritional supplements of unrivaled excellence
  • 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
267 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.
  • 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).
  • Packaged in the USA by a family owned and operated company since 1968
#3 Real Supplements Rated Best in 2020
Nutricost Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free
299 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
Doctor's Best Time-Release Niacin with niaxtend, Non-GMO, Vegan, Gluten Free, 500 mg, 120 Tablets
340 Reviews
Doctor's Best Time-Release Niacin with niaxtend, Non-GMO, Vegan, Gluten Free, 500 mg, 120 Tablets
  • 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
Sale#5 Real Supplements Rated Best in 2020
Rugby Niacin 500 mg 1000 Tabs
686 Reviews
Rugby Niacin 500 mg 1000 Tabs
  • 500 mg tablets
  • Promotes healthy tissues
  • Maintains a healthy lipid balance
Sale#6 Real Supplements Rated Best in 2020
Nature's Bounty Niacin Pills and Supplement, Supports Nervous System and Energy Production, 250mg, 90 Capsules
115 Reviews
Nature's Bounty Niacin Pills and Supplement, Supports Nervous System and Energy Production, 250mg, 90 Capsules
  • Supports heart health
  • Supports carbohdrate and protein metabolism
  • Helps maintain healthy skin
  • Helps maintain a healthy nervous system
  • These statements have not been evaluated by the Food and Drug Administration
#7 Real Supplements Rated Best in 2020
Slo Niacin 500mg 2 Packs each of 175 Tablets
250 Reviews
Slo Niacin 500mg 2 Packs each of 175 Tablets
  • Slo-Niacin's patented polygel controlled slow release niacin is ideal for those who can't tolerate immediate release tablets
  • Slo-Niacin contains 500 mg of niacin, a member of the vitamin B complex group
  • Slo-Niacin's scored tablets can be broken in half for a lower dosage
  • Please read all label information on delivery
#8 Real Supplements Rated Best in 2020
Nutricost Niacinamide (Vitamin B3) 500mg, 240 Capsules - Non-GMO, Gluten Free, Flush Free Vitamin B3
304 Reviews
Nutricost Niacinamide (Vitamin B3) 500mg, 240 Capsules - Non-GMO, Gluten Free, Flush Free Vitamin B3
  • 240 Capsules of Niacinamide Per bottle
  • 500mg of Vitamin B3 (Niacinamide) Per Capsule
  • Get The Benefits of Vitamin B3 Without The "Niacin Flush"
  • High Quality Vitamin B3 - Niacinamide. May Have White or Blue Lid
  • Non-GMO, Gluten Free, and Made in a GMP Compliant, FDA Registered Facility
#9 Real Supplements Rated Best in 2020
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
#10 Real Supplements Rated Best in 2020
GNC Niacin 500mg, 100 Vegetarian Tablets, Supports Blood Vessel Health
  • GNC Niacin 500 MG provides 500mg of niacin per serving, which supports a healthy blood lipid profile and helps support blood vessel health*
  • Niacin or vitamin B-3 is essential for a variety of bodily functions including glucose oxidation, energy metabolism, as well as DNA replication and repair*
  • GNC Niacin 500mg contains no preservatives or artificial colors or flavors and is also sugar-, sodium-, wheat-, soy-, yeast-, gluten- and dairy-free.
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
  • Supports A Healthy Blood Lipid Profile
Sale#11 Real Supplements Rated Best in 2020
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.
#12 Real Supplements Rated Best in 2020
Nature's Bounty Flush Free Niacin 500 Mg, 240 Capsules (2 X 120 Count Bottles)
111 Reviews
Nature's Bounty Flush Free Niacin 500 Mg, 240 Capsules (2 X 120 Count Bottles)
  • Pack of 240 Capsules (Packed as 2 x 120 count bottles)
  • Supports heart health. Supports carbohdrate and protein metabolism.*
  • Helps maintain healthy skin.*
  • Flush-free formula.**
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. **NOTICE: Most people should not experience flushing when using this product. However, a few sensitive individuals may experience some flushing. Do not take on an empty stomach.
#13 Real Supplements Rated Best in 2020
Solgar - Niacin (Vitamin B3) 500 mg, 250 Vegetable Capsules
  • Vitamin B3; Niacin (also known as vitamin B3) is a water-soluble vitamin and is part of the B Complex; This formulation provides 500 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
#14 Real Supplements Rated Best in 2020
Slo-Niacin Vitamin B3 500 Mg - Slow Release Niacin for Heart Health, Energy Boost, Health Skin, Healthy Blood Sugar Levels - 100 Capsules
  • CARDIOVASUCALR HEALTH SUPPORT: This powerhouse supplement has been clinically shown to boost good levels of HDL cholesterol and decrease levels of triglycerides and LDL cholesterol which can result to blockage of blood vessels, helping maintain a heathy heart.
  • OVERALL HEALTH SUPPORT: Studies has shown Niacin, also known as Vitamin B3, naturally promotes the proper functioning of the digestive system, nervous system, skin health and support healthy blood sugar levels for a happy and healthy you.
  • PROMOTES CELLULAR ENERGY: Do you occasionally tired and need energy? Diets rich in niacin has shown to support cellular energy by supporting proper Energy Production and Fat Metabolism to keep you active and alert even as you age.
  • 100 NIACIN CAPSULES, SLOW RELEASE: Each bottle contains flush free 100 capsules of 500Mg Niacin (Vitamin B3) with unique time release formula that slowly releases niacin into your system without causing the unpleasant flushing signs.
  • 100% PURE: Made in the USA with natural and organic ingredients. Nothing Artificial. Free from Gluten, Wheat, Dairy or other unnecessary additives and preservatives. Naturally good for you! Based on science. Supported by clinical evidence.
#15 Real Supplements Rated Best in 2020
Carlson - Niacin, 50 mg, Supports Cholesterol Metabolism, Energy Production, Heart Health, Nerve Function, 300 Tablets
  • CHOLESTEROL METABOLISM - Niacin (vitamin B3) is an essential B vitamin that's important for properly metabolizing fats and fat-like substances, such as cholesterol.
  • HEART FUNCTION - Carlson Niacin Supplements help promote healthy heart health and nerve function.
  • ENERGY PRODUCTION - Support your body's healthy energy production with 50mg Niacin tablets from Carlson.
  • 50 MG OF NIACIN - A single tablet of Carlson Niacin supplements provides 50 mg of niacin.
  • QUALITY GUARANTEED SINCE 1965 - All Carlson products are tested by an FDA-registered laboratory for potency and quality.
Sale#16 Real Supplements Rated Best in 2020
Niacin 1000mg 100 Capsules | Non-GMO, Gluten Free | Vitamin B3 | by Horbaach
32 Reviews
Niacin 1000mg 100 Capsules | Non-GMO, Gluten Free | Vitamin B3 | by Horbaach
  • Horbaach Niacin 1000 mg, also known as Vitamin B3, is a non-GMO and gluten-free supplement
  • Niacin pills help maintain cholesterol levels already within a normal range*
  • Our quick-release niacin capsules contain 1,000 mg per serving in one convenient capsule
  • Niacin also supports nervous system health and energy metabolism*
  • Our niacin vitamins deliver max potency and are pure, ready to nourish the body
Sale#17 Real Supplements Rated Best in 2020
Nature Made Flush-Free Niacin 500 mg Softgels, 60 Count (Packaging May Vary)
  • For a limited time, you may receive either bottle while we update our packaging. Both have the same great product inside. Based on new FDA regulations, you may also notice a change in the unit of measure and/or daily value for certain products.
  • Contains a 60-day supply of Nature Made Flush-Free Niacin Inositol Hexanicotinate 500 mg Softgels, 60 softgels per bottle.
  • An important B vitamin source that helps support general blood vessel and circulatory health
  • Adults, take 1 softgel daily with water and a meal.
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
#18 Real Supplements Rated Best in 2020
Nutricost Niacin Vitamin B3 Powder 250 Grams - 1G Per Serving - Pure, High Quality Vitamin B3 Powder
  • 250 Grams of Pure Vitamin B3 (Niacin) Powder Per Bottle
  • Warning: Will Likely Cause "Niacin Flush." For Non-Flush, try Niacinamide
  • Consuming On An Empty Stomach May Increase Flush Reaction
  • Non-GMO, Gluten Free, 3rd Party Tested
  • Made in A GMP Compliant, FDA Registered Facility
#19 Real Supplements Rated Best in 2020
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Essential B-Group Vitamin*, Nutritional Health, 100 Capsules
302 Reviews
NOW Supplements, Niacin (Vitamin B-3) 500 mg, Essential B-Group Vitamin*, Nutritional Health, 100 Capsules
  • NIACIN/VITAMIN B-3: Niacin (Vitamin B-3) is an essential B-group vitamin necessary for good health.
  • NUTRITIONAL HEALTH: Take 1 capsule daily as needed, with a meal. This high potency capsule should be taken under doctor's supervision.
  • CERTIFICATIONS/CLASSIFICATIONS: Soy Free, Made without Gluten, Dairy Free, Egg Free, Nut Free
  • 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#20 Real Supplements Rated Best in 2020
Solaray Niacin 500 mg, Vitamin B-3, 100ct
  • 500mg Support: Niacin may help support energy metabolism as well as skin, circulation & nerve health
  • Heart Healthy: May help support healthy cardiac function & cholesterol already within a normal range
  • Niacin Flush: May help support healthy blood flow, which can cause skin to temporarily appear red
  • Trusted Brand: Non-GMO & vegan; manufactured in our own facility & lab verified for potency & purity
  • Customers Say: “Excellent product…works very well for me” | “Strong. Works like niacin should”

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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