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Home › Vitamins › Vitamin D3

BulkVitamins

Vitamin D3 Tablets, 90 tablets

£5.99 for 90 tablets at Bulk. That works out at 2p per 1,000 IU, which ranks it 21st of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU2pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day2p
A week12p
A month50p
A year£6.07

At one 1,000 IU dose a day, this pack lasts 12 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

  • Servings: 90 ÷ 1 per serving = 90
  • In the pack: 90 × 4,000 IU = 360,000 IU
  • £5.99 ÷ 360,000 IU × 1,000 IU = 1.66p per 1,000 IU
  • A week 1.66p × 7 = 12p · a month × 30 = 50p · a year × 365 = £6.07
  • Amount per serving: stated on the label.

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

Cheaper vitamin D3

All 207, ranked →
Nature's AnswerVitamin D3 DropsHealf · 4,000 IU a serving · 40p a month · a pack lasts 2.7 years1p£13.49View at Healf (opens in a new tab)
Vitamin D3 + K2 180 Brand NewProtein Works · 4,000 IU a serving · 42p a month · a pack lasts 2 years1p£9.99View at Protein Works (opens in a new tab)
ZipVitVitamin D3 4000iu SoftgelsZipVit · 4,000 IU a serving · 42p a month · a pack lasts 2 years1p£9.99View at ZipVit (opens in a new tab)
Vitamin D-3 5,000 IUHealf · 5,000 IU a serving · 42p a month · a pack lasts 1.6 years1p£8.49View at Healf (opens in a new tab)
Vitamin D3 SoftgelsMyprotein · 2,520 IU a serving · 46p a month · a pack lasts 1.2 years2p£6.99View at Myprotein (opens in a new tab)
This productBulk · 4,000 IU a serving · 50p a month · a pack lasts 12 months2pshown above

Cheapest anywhere: 1p per 1,000 IU at WeightWorld, 33p a month less than this one at the same 1,000 IU dose.

Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.

Sizes

PackPricePer dose
270 tablets£14.491p
90 tabletsthis one£5.992p

Pack sizes

PackPricePer doseA year
270 tablets£14.491p£4.90
90 tabletsthis pack£5.992p£6.07

At one 1,000 IU dose a day, the 270 tablets pack costs £1.18 less a year than this one.

On the label

Vitamin D3 · Vitamin D3
4,000 IU per serving (stated on the label)
Pack
90 tablets · 90 servings · 1 tablet(s) a serving
Cost per serving
7p (90 servings in the pack)
More label details
Claimed on the listing
vegetarian
Barcode
5060343744011
Sold by
Bulk
What the listing says
“90 Tablets” · “Per Serving (1 Tablet)” · “Vitamin D3 (Cholecalciferol) ; 100μg ; 2000”
Ingredients

Bulking Agents (Calcium Carbonate, Microcrystalline Cellulose), Vitamin D3 Preparation (Maltodextrin, Starch, Sucrose, Cholecalciferol), Anti-Caking Agent (Magnesium Stearate). Vegetarian, Halal, GLP1-Friendly*

From the Bulk listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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One 1,000 IU dose is our comparison unit, not a recommendation.

Price history

No price change since 17 September 2026. Checked on 1 day, most recently 17 September 2026.

Price at every check
£5.99Bulk
First recorded
£5.9917 Sept
Checked on
1 daysince 17 Sept

Checked once so far, on 17 September 2026.

  1. First checked at Bulk: £5.99

Questions about this product

How much does Bulk Vitamin D3 Tablets cost per 1,000 IU?

2p per 1,000 IU, from £5.99 for 90 tablets at Bulk, checked on 17 September 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 21st of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

12 months at one 1,000 IU dose. The pack holds 360,000 IU in total.

About Bulk

Founded 2006 · Colchester, England

Bulk is a British sports nutrition company based in Colchester, Essex. Adam Rossiter and Elliot Dawes, who met at the University of Essex, started it in 2006 as Bulk Powders; it was renamed Bulk at the start of 2021, and the founders remain its majority owners.

All 133 Bulk products, priced per doseVisit Bulk (opens in a new tab)

More from Bulk

Keep comparing

All vitamin D3Every form, cheapest per 1,000 IU firstVitamin D3 guideWhat it is, why people take it, how the forms differBulkAll 133 products from this brand, per doseVitaminsEverything else we price in this categoryVitamin D3 price historyEvery vitamin D3 product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from