Best Source Naturals Vitamin B3 Niacin Supplements in 2026

Heart Health: Magnesium activates the enzymes necessary for a number of physiological functions, including neuromuscular contractions, cardiac function, and the regulation of the acid-alkaline balance in the body.*

Overall Health & Nutrient Metabolism: This vital mineral helps the metabolism and utilization of many essential nutrients, including vitamin B6, vitamin C, and vitamin E.*

Energy & Bone Support: Magnesium is necessary for the metabolism of carbohydrates, amino acids as well as for energy production and the utilization of calcium, phosphorus, sodium and potassium.*

240 Capsules of Niacinamide Per bottle

500mg of Vitamin B3 (Niacinamide) Per Capsule

Get The Benefits of Vitamin B3 Without The "Niacin Flush"

𝗔𝗡 𝗢𝗥𝗜𝗚𝗜𝗡𝗔𝗟 𝗩𝗜𝗧𝗔𝗠𝗜𝗡 𝗗𝟯 𝗔𝗡𝗗 𝗞𝟮 - This Vitamin D3 K2 supplement is loaded with 10,000 IUs of Vitamin D3 (that's 2x more than most brands with only 5,000 IUs) and 100 mcg of Vitamin K2. It also includes a unique blend of Vitamin B6, Zinc, Magnesium, MCT and OxBile you won't find in other brands - Includes a 120 day supply

𝗨𝗦𝗔 𝗚𝗠𝗣 𝗖𝗘𝗥𝗧𝗜𝗙𝗜𝗘𝗗 𝗠𝗔𝗡𝗨𝗙𝗔𝗖𝗧𝗨𝗥𝗜𝗡𝗚 - Our state-of-the-art manufacturing facilities are located in the US and are staffed with highly trained individuals who formulate superior products. Being certified under US laws and regulations (GMP Certified), these facilities are uncompromising when it comes to cleanliness and quality control.

𝗜𝗡𝗖𝗥𝗘𝗗𝗜𝗕𝗟𝗘 𝗜𝗡𝗚𝗥𝗘𝗗𝗜𝗘𝗡𝗧𝗦 - We're sorry to say it, but if you’re looking for cheap, you’re in the wrong place. We search far and wide, domestic and international, to provide high-quality ingredients for which your body will thank you. Unfortunately, getting the best ingredients from domestic and international farms can come at a higher-than-normal cost. If quality, satisfaction, and results are essential to you, you’re in the right place!

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

Supports Energy Metabolism; Niacin (also known as vitamin B3) is a water-soluble vitamin and is part of the B Complex; It is required for the metabolism of carbohydrates and protein into energy

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

Cardiovascular Support; Niacin supports cardiovascular health, promotes increased blood flow, and supports the health of the nervous system

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

Vitamin B3 Niacin: A water-soluble vitamin with an important role in cellular metabolism

Cholesterol Supplements: Niacin has an impressive record of cholesterol metabolism beneficial effects

Niacin Supplement: Niacin has a very long history of clinical use in cardiovascular health support

Niacin Supplement – Niacin, or Vitamin B-3, is a necessary part of the body's pathway for converting carbohydrates, fats, and proteins into energy.

Must-Have for Metabolism – Made with 500 mg of Niacin from Inositol Hexaniacinate, this Niacin formula may support circulatory health and energy production.

Non Flushing – This flush-free form delivers the many benefits of Niacin without the uncomfortable warm burning or itching sensation that some Niacin supplements can cause.

Pack of 2, Each is 60 Count, Total 120 Softgels

Nature Made’s Flush-Free Niacin is an important B vitamin source that helps support general blood vessel and circulatory health.

This is flush-free niacin product which is appropriate for general circulatory function and may not provide the same type of benefits as a regular niacin product.

B-Vitamin Benefits. Essential components of numerous key enzyme systems, without which the body cannot function. Each B-vitamin fills a different complementary need, which is why they should most often be taken together. B-vitamins act as coenzymes to catalyze numerous biochemical reactions

Suggested Use. 1 tablet 1 to 2 times daily.

Well Made Supplement. This tablet is packed with b-vitamins such as b-1, b-2, b-6 and much more.

LOW-FLUSH NIACIN: Each Endur-Acin tablet contains 250mg 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.*

Provides a flush-free form of niacin to help support cholestrol levels already within normal limits

in fat and cholesterol metabolism, which can have an impact on circulation

Helps in the raising of the beneficail high density lipoprotein (HDL) cholesterol

HIGHER ENERGY LEVELS, IMPROVED COGNITIVE FUNCTION, AND HEART HEALTH- Niacin is one of the B vitamins (B3) and boasts various health benefits. Vitamin B3 Niacin also supports energy production, improves cognitive function, protects skin cells, and promotes better heart health. Our B3 Vitamin 500mg supplements also help to relieve various joint pain issues.

TIME RELEASE FORMULATION FOR OPTIMUM ABSORPTION- Our fine quality slow-release Niacin supplements boast an all-natural superior formula as it uses an advanced manufacturing technique that allows nutrients to be released slowly over the period of 2 to 4 hours. This, in turn, promotes optimum absorption and utilization of nutrients allowing you to get the most out of this useful B3 Niacin supplement.

BPA FREE, RECYCLABLE GLASS BOTTLES- Cheap plastic bottles are harmful to your health. We seal your supplements in amber glass bottles with heat-sealed sleeves and best by dates to ensure the safest and purest product available. Unlike some other supplement manufacturers, our bottles are fully recyclable. Each bottle contains 100 tablets that are easy to swallow, Gluten Free and Vegetarian.

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

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

Energy metabolism; Niacin is required for the metabolism of carbohydrates and protein into energy

GNC Niacin 500 mg Supports a healthy blood lipid profile*

Supports energy metabolism*

100 vegetarian tablets

NIACIN SUPPLEMENT: Receive exceptional purity, potency, and quality from this essential vitamin!

HIGH POTENCY: Delivers 1,000 mg of Niacin (as Nicotinic Acid) per serving.

EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency

6 ALL-NATURAL ACTIVE FORM OF VITAMIN BS with Glutathione Yeast that contains B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine), B12 and Folic Acid for healthy heart, cognitive and nerve function. HEALTH BENEFITS: Helps combat against poor memory, slow metabolism and weak body defense. Supports healthy growth, complexion, hair condition, stamina. Relieve fatigue. Aid healthy sleep quality. For better mood, emotional and overall well-being.

NATURAL-OCCURING SOURCE OF B-COMPLEX: Unlike other VitaminB supplements which are synthetically manufactured, it is extracted from yeast enriched with Vit Bs using a Nutrient Activation Process - A bonding process that occurs at the molecular level & involves a “growing process” like a plant from seed; resulting in nutrients that is naturally bonded with carrier food factor such as protein, carbohydrates, enzyme etc. for better absorption and added nutrition goodness.

MORE POTENT, HIGHER POTENCY: 4 times more bioavailable & retained up to 2X longer in the body than synthetic vitamin. GENTLE ON STOMACH and is proven to be easily digestible and assimilated to assist the metabolism of macronutrients to provide the daily requirement for health support.

Flush-free niacin

B-3 for energy & cardiovascular health

Suitable for vegetarians