Niacin, or vitamin B3, is a water-soluble B vitamin found naturally in meat, fish, eggs, milk, leafy greens and whole grains, and the body can also make it from tryptophan, an essential amino acid found in dietary protein. Niacin is involved in over 400 enzymatic reactions, essential for cellular energy production as it forms part of NAD and NADP, two fundamental coenzymes in carbohydrate, fat and protein metabolism. Under EU-authorised health claims, niacin contributes to the maintenance of normal skin, to normal function of the nervous system, and to the reduction of tiredness and fatigue. Recommended daily niacin intake is generally 14-16mg for an adult, though some people choose higher doses for targeted supplementation, always under professional guidance — which is where flush-free niacin is useful, allowing higher intakes without the characteristic redness of standard niacin.

Compare all the options in our vitamin B3 range in store.

One well-known downside of high-dose niacin supplementation is the “flush” — a warm, flushed sensation with skin redness, mainly on the face, neck and arms. Though temporary and harmless, it can be uncomfortable enough to put people off continuing supplementation. Now Foods’ flush-free formula solves this using inositol hexanicotinate, a molecule made of six niacin units chemically bound to a central inositol molecule. This structure allows a gradual, steady release of niacin, avoiding the sharp plasma spike responsible for flushing. Inositol itself is a natural nutrient in the B-vitamin family, involved in cell signalling — so the niacin-inositol combination offers a useful dual nutritional contribution. Each capsule provides 500mg of niacin and 135mg of inositol from 640mg of inositol hexanicotinate.

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Now Foods, founded in 1968, is internationally recognised for the quality of its supplements, manufactured in GMP-certified facilities with independent purity testing. The 500mg-per-capsule dose is substantial, offering a significant niacin intake in a once-daily format, and the hypromellose vegetable capsule makes this product suitable for vegetarian and vegan diets. Now Foods’ clear labelling — precise dosages and listed allergens — lets shoppers make an informed choice.

Take 1 capsule per day, ideally with a meal to support absorption. If you are new to niacin supplementation, it can help to start gradually and observe your own tolerance, even though this flush-free formula is designed to minimise side effects.

Food supplement. Not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended daily dose. We recommend consulting a healthcare professional before starting supplementation, particularly if on medical treatment, pregnant, or breastfeeding. Store in a cool, dry place, away from direct light. Keep out of reach of children.

Can niacin be combined with other B vitamins?

Yes, niacin is part of the B-vitamin complex of eight distinct vitamins that work together in the body, and combining them is common in broader supplementation. As each B vitamin has its own dosage and specifics, we recommend asking a healthcare professional to tailor a protocol to your situation.

Is flush-free niacin suitable for vegetarians?

Yes. This product uses a hypromellose capsule — a 100% plant-based cellulose shell — with no animal-derived ingredients, suiting vegetarian and vegan diets.

How long does a 90-capsule bottle last?

At one capsule a day, the 90-capsule bottle provides a full three months of supply — a strong value option for ongoing use.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.