NOW Foods Niacin (Vitamin B-3) 500 mg, Flush-Free, Double Strength, 90 Veg Capsules

Health Benefits of Niacin Supplements

Niacin, or vitamin B-3, is an essential water-soluble vitamin that contributes to normal energy-yielding metabolism, the normal functioning of the nervous system, and the maintenance of normal skin. It also helps reduce tiredness and fatigue as part of a balanced diet. This flush-free formula delivers the same nutritional support without the uncomfortable side effects often associated with standard niacin. B vitamins work together to promote overall vitality, and this supplement is a convenient way to boost your intake.

What Is Flush-Free Niacin?

Standard niacin (nicotinic acid) can cause a harmless but unpleasant ‘niacin flush’—a warm, tingling sensation caused by temporary vasodilation. NOW Foods Niacin 500 mg undertake inositol hexanicotinate, a special form where six niacin molecules are bound to inositol. This structure releases niacin gradually, minimising or eliminating the flush while still providing the full benefits of vitamin B-3. Each double-strength capsule provides 500 mg of flush-free niacin, making it ideal for those seeking higher doses without discomfort.

Recommended Dosage and How to Take Niacin

One capsule daily with food provides 500 mg of flush-free niacin—a double-strength dose. Because niacin is water-soluble, excess is excreted in urine. If you are new to niacin, start with a lower dose and increase gradually as tolerated. Do not exceed the recommended serving without consulting a health care professional. This supplement is suitable for vegans and vegetarians, and it is made without gluten, non-GM, and GMP Quality Assured.

Niacin Flush vs. Flush-Free: What’s the Difference?

Standard nicotinic acid triggers a prostaglandin-mediated flush as blood vessels dilate. While harmless, it can be alarming. Flush-free niacin (inositol hexanicotinate) is absorbed more slowly, preventing the sudden release that causes flushing. This makes it a great choice for those sensitive to the flush. However, some research suggests inositol hexanicotinate may have slightly different metabolic effects, particularly on lipid profiles. For specific health concerns, consult your doctor to determine the best form for you.

How to Choose a High-Quality Niacin Supplement

Look for third-party testing to ensure purity and potency. NOW Foods undergoes rigorous GMP certification, with in-house ISO/IEC accredited laboratories testing for stability, potency, and product formulation. This flush-free formula is vegan, non-GM, and gluten-free—qualities valued by health-conscious consumers. The double-strength 500 mg dose allows you to take fewer capsules. Since 1968, NOW Foods has been a trusted family- and employee-owned manufacturer committed to quality and transparency.

This product is a food supplement and should not be used as a substitute for a balanced diet and healthy lifestyle. Always consult your health care professional before taking any supplement.

Potential Side Effects and Safety Considerations

Flush-free niacin greatly reduces the likelihood of flushing, but some individuals may experience mild gastrointestinal discomfort or headache. Inositol hexanicotinate is generally well tolerated, but high intakes of niacin (particularly the nicotinic acid form) have been associated with liver toxicity, elevated blood sugar, and other issues. While this flush-free form is considered safer, it is still important to stay within recommended doses. Pregnant or nursing women, and those with liver disease, peptic ulcers, gout, or diabetes should consult a doctor before supplementing. Discontinue undertake and seek medical advice if adverse reactions occur.

Frequently Asked Questions

Is flush-free niacin as effective as regular niacin?

Yes, inositol hexanicotinate provides the same essential vitamin B-3 nutrition. Some research suggests differences in how it affects cholesterol, but for general nutritional support, it is equally effective.

Can I take this on an empty stomach?

It is best taken with food to minimise any potential stomach upset. Food also aids absorption.

How long does it take to sealed results?

As a dietary supplement, niacin works gradually. Consistent undertake, combined with a balanced diet, supports long-term health benefits.

Is this product suitable for vegans?

Yes, it is vegan and vegetarian-friendly. The capsules are made from vegetable cellulose.