We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

Niacinamide (vitamin B3)

Also called niacin, vitamin B3, niacinamide and 4 more

nicotinamide, nicotinic acid, inositol hexanicotinate, no-flush niacin.

The best price per 500 mg and per month across 3 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing niacin (vitamin B3)

We count the vitamin B3 a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. Niacin (vitamin B3) comes as niacin (nicotinic acid), niacinamide and inositol hexanicotinate (no-flush), and each form has its own table, because someone buying one would not usually take another as a like-for-like substitute. Products that combine niacin (vitamin B3) with other ingredients are listed separately, because their price buys more than vitamin B3. 500 mg is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

Prices last checked: . Ranked purely by price per 500 mg — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Compared at 500 mg. Enter the amount you take to see your own costs.

Sort and filterFilters
Retailers
Show
Niacin (vitamin B3), Niacinamide: products ranked by price per 500 mg
RankProductPer 500 mgPer monthLastsBuyHow it is worked out
1
Myvitamins Niacinamide Tablets
Cheapest per doseNiacinamide TabletsMyprotein · 90 tablets · 90 servings · 450 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
6p£1.853 months£4.99View at Myprotein (opens in a new tab)Free delivery over £55.00, otherwise £4.49AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 450 mg = 40.5 g
  • £4.99 ÷ 40.5 g × 500 mg = 6.16p per 500 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90Tablets”
  • units per serving “Consume 1 tablet as a daily serving”
  • amount per serving “Niacin ; 450mg ; 2813”

Is this wrong? Tell us

2
Myvitamins Niacinamide Tablets
Niacinamide TabletsMyprotein · 30 tablets · 30 servings · 450 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
11p£3.3227 days£2.99View at Myprotein (opens in a new tab)Free delivery over £55.00, otherwise £4.49AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 450 mg = 13.5 g
  • £2.99 ÷ 13.5 g × 500 mg = 11.1p per 500 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “30Tablets”
  • units per serving “Consume 1 tablet as a daily serving”
  • amount per serving “Niacin ; 450mg ; 2813”

Is this wrong? Tell us

3
Thorne Niacinamide
NiacinamideHealf · 180 capsules · 180 servings · 500 mg a servingDetails and price historyAdd to my stack
11p£3.426 months£20.49View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 180 ÷ 1 per serving = 180
  • In the pack: 180 × 500 mg = 90 g
  • £20.49 ÷ 90 g × 500 mg = 11.4p per 500 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “180 caps”
  • servings stated “Servings Per Container: 180”
  • units per serving “Serving Size: 1 Capsule”
  • amount per serving “Niacin (as Niacinamide) ; 500 mg NE”

Is this wrong? Tell us

4
Nature's Best Vitamin B3 (Niacin) 250mg - Maximum Strength, Highly Absorbable
Vitamin B3 (Niacin) 250mg - Maximum Strength, Highly Absorbable100 tablets · 100 servings · 250 mg a servingDetails and price historyAdd to my stackTesting claimed on labelclaimed: veganclaimed: vegetarian
15p£4.5050 days£7.50View at Lamberts Healthcare (Nature's Best) (opens in a new tab)Free delivery over £20.00, otherwise £2.50AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 100 ÷ 1 per serving = 100
  • In the pack: 100 × 250 mg = 25 g
  • £7.50 ÷ 25 g × 500 mg = 15p per 500 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Specifications: 100 Tablets”
  • units per serving “in a convenient, one-a-day dose”
  • amount per serving “Our high-strength niacin tablets deliver a full 250mg of vitamin B3”

Is this wrong? Tell us

5
Biocare Vitamin B3
Vitamin B3Healf · 30 capsules · 30 servings · 100 mg a servingDetails and price historyAdd to my stackclaimed: vegan
£1.03£30.956 days£6.19View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 100 mg = 3 g
  • £6.19 ÷ 3 g × 500 mg = £1.03 per 500 mg
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “30 caps”
  • units per serving “per daily intake: 1 capsule”
  • amount per serving “Niacin (B3) ; 100mg”

Is this wrong? Tell us

By shop

Each shop's niacin (vitamin B3) products, with where its cheapest sits in the market.

How we work out these prices

We count the amount of vitamin B3 per serving as stated on the label.

Our full method · All niacin (vitamin B3) forms