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Home › Vitamins › Vitamin D3

Vitamin D2

Also called vitamin D, vit D, D3 and 2 more

cholecalciferol, colecalciferol.

The best price per 1,000 IU and per month across 3 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing vitamin D3

We count the cholecalciferol a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. Vitamin D3 comes as vitamin D3 and vitamin D2, 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 vitamin D3 with other ingredients are listed separately, because their price buys more than cholecalciferol. 1,000 IU 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 1,000 IU — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Compared at 1,000 IU. Enter the amount you take to see your own costs.

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Vitamin D3, Vitamin D2: products ranked by price per 1,000 IU
RankProductPer 1,000 IUPer monthLastsBuyHow it is worked out
1
Simply Supplements Vitamin D2 Tablets 4,000iu
Cheapest per doseVitamin D2 Tablets 4,000iu360 tablets · 360 servings · 4,000 IU a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
1p35p3.9 years£16.99View at Simply Supplements (opens in a new tab)Free delivery from £20.00, otherwise £1.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 360 ÷ 1 per serving = 360
  • In the pack: 360 × 4,000 IU = 1,440,000 IU
  • £16.99 ÷ 1,440,000 IU × 1,000 IU = 1.18p per 1,000 IU
  • Amount per serving: stated on the label.
What the retailer's listing says
  • amount per serving “Vitamin D2 Tablets 4,000iu”
  • confirmed values “confirmed from the retailer's own product page, not this listing's text: pack units 360; pack unit type tablet; units per serving 1.0”

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2
Simply Supplements Vitamin D2 Tablets 2,000iu
Vitamin D2 Tablets 2,000iu360 tablets · 360 servings · 2,000 IU a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
3p89p2 years£21.29View at Simply Supplements (opens in a new tab)Free delivery from £20.00, otherwise £1.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 360 ÷ 1 per serving = 360
  • In the pack: 360 × 2,000 IU = 720,000 IU
  • £21.29 ÷ 720,000 IU × 1,000 IU = 2.96p per 1,000 IU
  • Amount per serving: stated on the label.
What the retailer's listing says
  • amount per serving “Vitamin D2 Tablets 2,000iu”

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3
Veganicity Vitamin D 800iu
Best value under 6 months' supplyVitamin D 800iuVeganicity · Vitamin Planet · 90 tablets · 90 servings · 800 IU a servingDetails and price historyAdd to my stack
8p£2.462 months£5.91View at Vitamin Planet (opens in a new tab)Delivery £3.95AmazonFind 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 × 800 IU = 72,000 IU
  • £5.91 ÷ 72,000 IU × 1,000 IU = 8.21p per 1,000 IU
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “90 Tablets”
  • units per serving “1 tablet daily”
  • amount per serving “Vitamin D 800iu”

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4
Haliborange Vitamin D 1000iu Strawberry Effervescent 20 Tablets
Vitamin D 1000iu Strawberry Effervescent 20 TabletsHaliborange · Lloyds Pharmacy · 20 tablets · 20 servings · 1,000 IU a servingDetails and price historyAdd to my stackStrawberry
26p£7.7720 days£5.18View at Lloyds Pharmacy (opens in a new tab)Free delivery over £30.00, otherwise £2.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 20 ÷ 1 per serving = 20
  • In the pack: 20 × 1,000 IU = 20,000 IU
  • £5.18 ÷ 20,000 IU × 1,000 IU = 25.9p per 1,000 IU
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “20 Tablets”
  • units per serving “Dissolve 1 tablet daily”
  • amount per serving “Vitamin D 1000iu”

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By shop

Each shop's vitamin D3 products, with where its cheapest sits in the market.

How we work out these prices

We count the amount of cholecalciferol stated on the label, converting between units (for example micrograms and IU) so every product is on the same scale.

Our full method · All vitamin D3 forms