High Strength Vitamin D 25 µg Food Supplement 90 Tablets
£4.00 for 90 tablets at Boots. That works out at 4p per 1,000 IU, which ranks it 56th of the 207 vitamin D3 products we price across 20 UK retailers.
At one 1,000 IU dose a day, this pack lasts 3 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 × 1,000 IU = 90,000 IU
- £4.00 ÷ 90,000 IU × 1,000 IU = 4.44p per 1,000 IU
- A week 4.44p × 7 = 31p · a month × 30 = £1.33 · a year × 365 = £16.22
- 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 →
Switching to the Vitabiotics pack saves 9p a month at the same 1,000 IU dose.
Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.
On the label
- Vitamin D3 · Vitamin D3
- 1,000 IU per serving (stated on the label)
- Pack
- 90 tablets · 90 servings · 1 tablet(s) a serving
- Cost per serving
- 4p (90 servings in the pack)
More label details
- Sold by
- Boots
- What the listing says
- “90 Tablets” · “Take 1 tablet a day” · “Vitamin D3 ; 25 µg ; 500”
Ingredients
Cellulose, Bulking Agent (Dicalcium Phosphate, Corn Maltodextrin, Vegetable Oil, Anti-Caking Agents (Magnesium Stearate, Silicon Dioxide), Sucrose, Emulsifier (Modified Corn Starch), Antioxidants (Sodium Ascorbate, DL Alpha Tocopherol), Vitamin D3 (Cholecalciferol).
From the Boots 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.
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Filled in from the label’s serving: 1 tablet.
What you paid
Optional. At Boots today: £4.00.
“Order by” allows 3 working days’ delivery from Boots and your spare days.
Price history
No price change since 23 September 2026. Checked on 2 days, most recently 15 October 2026.
- Price at every check
- £4.00Boots
- First recorded
- £4.0023 Sept
- Checked on
- 2 dayssince 23 Sept
- First checked at Boots: £4.00
Questions about this product
How much does Boots High Strength Vitamin D 25 µg Food Supplement 90 Tablets cost per 1,000 IU?
4p per 1,000 IU, from £4.00 for 90 tablets at Boots, checked on 15 October 2026.
Is it the cheapest vitamin D3 in the UK?
No, it is 56th of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.
How long does one pack last?
3 months at one 1,000 IU dose. The pack holds 90,000 IU in total.
About Boots
Founded 1849 · Nottingham, England · Part of The Boots Group
Boots is a pharmacy-led health and beauty retailer founded in 1849, when John Boot opened a herbalist shop in Nottingham, where it is still based. com. It belongs to The Boots Group, owned since August 2025 by the private equity firm Sycamore Partners and Stefano Pessina's family.
All 96 Boots products, priced per doseVisit Boots (opens in a new tab)
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