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Vitamin B3 Niacin (Nicotinic Acid) 500mg Capsules

(9 customer reviews)
  • Nicotinic acid is a form of Vitamin B3 that has vasodilation properties. This means that it expands the capillaries (fine blood vessels) under the skin so more blood flows to the skin making it red and itchy. This effect is called the ‘niacin flush’.
  • Though the niacin flush is uncomfortable it’s not harmful. It’s also a temporary effect in two ways; it disappears an hour or so after it starts and after continued usage it often stops happening at all.
  • Niacin contributes to: normal psychological function, normal energy-yielding metabolism, normal functioning of the nervous system and reduction of tiredness and fatigue.

In stock


90 Capsules (V)
90 Capsules (V)
180 Capsules (V)
180 Capsules (V)
Free UK 1st Class Delivery

Take one capsule daily with a meal or as directed by medical advisor.

Nicotinic Acid, Vegetable cellulose capsule.


Suitable for vegetarians and vegans.

This product contains a high dosage of Niacin and you should seek advice before taking.
This product may cause temporary skin flushing, tingling, and/or itching, especially when taken on an empty stomach. This is a natural and harmless reaction.
Prolonged use of this product may cause liver damage.
If pregnant, breast feeding, taking medication, or have a medical condition, please consult your Doctor before use.
Do not exceed the recommended daily dosage.
Discontinue use if adverse reactions occur.
Food supplements must not replace a balanced diet and healthy lifestyle.
Keep out of sight and reach of children.
Store in a cool dry place.
Always read the label carefully.

Products on this site are offered as dietary supplements and are sold to enhance a balanced diet, they are not offered as a cure for any illness, disease or disability, always read the label. We advise you to complete your own research prior to purchase, if in doubt consult your medical advisor.

Weight88 g
Dimensions80 × 23 × 110 mm

Based on 9 reviews

4.4 overall

Only logged in customers who have purchased this product may leave a review.

  1. B.M

    Verified reviewVerified review - view originalExternal link

    Had an anaphylactoid reaction, spent the night in hospital. Perhaps something in the capsule set it off?

    Anyway I had a strong metallic taste in my mouth (and I take lots of vitamins so no it was not the taste of the vitamins I know what they should taste like) after taking it which is a clear sign of an allergic reaction so please don’t tell me “oh it was just the niacin flush”.


  2. Anonymous

    Verified reviewVerified review - view originalExternal link

    Very good product, especially as it’s difficult to find niacin with flush effect. The 500 mg dosage is just right for me to control cholesterol level. Before taking this dosage, I started with the smaller 50 mg tablets (also from health4all) and slowly built my tolerance to the flushing. If you haven’t taken flushing niacin before, it’s better to start with low dosage to figure out the level at which flushing starts, as it can be uncomfortable.


  3. Martin Bates

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    Martin Bates

  4. Jean H.

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    Good product and good value for money. Excellent service. Received my order the next day. Would highly recommend

    Jean H.

  5. Martina Crowther-Menn

    Verified reviewVerified review - view originalExternal link

    My husband has been taking this product (Nicotinic Acid, the flush version of Niacin – NOT Niacinamide) for many years and in the process lowered his cholesterol from very high to within recommended limits. This product is so successful at doing this that he hasn’t needed to take any statins for years now.

    Martina Crowther-Menn

  6. Anonymous

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    Very easy ordering& fast delivery


  7. Stuart White

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    Stuart White

  8. Yasmin S.

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    Reasonable price, very speedy delivery and great quality product. Many thanks.

    Yasmin S.

  9. Stuart

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    Great value niacin