Vegan Vitamin D3 400iu Tablets, 120 tablets
£11.29 for 120 tablets at Simply Supplements. That works out at 24p per 1,000 IU, which ranks it 155th of the 207 vitamin D3 products we price across 20 UK retailers.
At one 1,000 IU dose a day, this pack lasts 48 days. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 120 ÷ 1 per serving = 120
- In the pack: 120 × 400 IU = 48,000 IU
- £11.29 ÷ 48,000 IU × 1,000 IU = 23.5p per 1,000 IU
- A week 23.5p × 7 = £1.65 · a month × 30 = £7.06 · a year × 365 = £85.85
- 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 Lloyds Pharmacy pack saves 85p 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
- 400 IU per serving (stated on the label)
- Pack
- 120 tablets · 120 servings · 1 tablet(s) a serving
- Cost per serving
- 9p (120 servings in the pack)
More label details
- Claimed on the listing
- vegan, vegetarian
- Barcode
- 5056049518148
- Sold by
- Simply Supplements
- What the listing says
- “Vegan Vitamin D3 400iu Tablets” · “confirmed from the retailer's own product page, not this listing's text: pack units 120; pack unit type tablet; units per serving 1.0”
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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 Simply Supplements today: £11.29.
“Order by” allows 3 working days’ delivery from Simply Supplements and your spare days.
Price history
No price change since 21 September 2026. Checked on 29 days, most recently 20 October 2026.
- Price at every check
- £11.29Simply Supplements
- First recorded
- £11.2921 Sept
- Checked on
- 29 dayssince 21 Sept
- First checked at Simply Supplements: £11.29
Questions about this product
How much does Simply Supplements Vegan Vitamin D3 400iu Tablets cost per 1,000 IU?
24p per 1,000 IU, from £11.29 for 120 tablets at Simply Supplements, checked on 20 October 2026.
Is it the cheapest vitamin D3 in the UK?
No, it is 155th of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.
How long does one pack last?
48 days at one 1,000 IU dose. The pack holds 48,000 IU in total.
About Simply Supplements
Founded 2004 · Yaxley, Peterborough, England
Simply Supplements is an online vitamins and supplements retailer that started in Guernsey in 2004 and is now based in Yaxley, near Peterborough. It is the trading name of Pinnacle Health Nutrition Ltd, a privately owned UK company.
All 134 Simply Supplements products, priced per doseVisit Simply Supplements (opens in a new tab)
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