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Vitamins

Vitamin D3 4000IU, 120 capsules

£21.39 for 120 capsules at Healf. That works out at 4p per 1,000 IU, which ranks it 58th of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU4pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.

A day4p

A week31p

A month£1.34

A year£16.27

At one 1,000 IU dose a day, this pack lasts 1.3 years. 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 × 4,000 IU = 480,000 IU
£21.39 ÷ 480,000 IU × 1,000 IU = 4.46p per 1,000 IU
A week 4.46p × 7 = 31p · a month × 30 = £1.34 · a year × 365 = £16.27
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 →

Natures AidVitamin D3 5000iu High Strength 60 TabletsLloyds Pharmacy · 5,000 IU a serving · £1.26 a month · a pack lasts 10 months4p£12.64View at Lloyds Pharmacy

WeightWorldVitamin D3 GummiesWeightWorld · 4,000 IU a serving · £1.31 a month · a pack lasts 1.3 years4p£20.99View at WeightWorld

Ultra Vitamin D 2000IU 96 TabletsLloyds Pharmacy · 2,000 IU a serving · £1.33 a month · a pack lasts 6 months4p£8.49View at Lloyds Pharmacy

High Strength Vitamin D 25 µg Food Supplement 90 TabletsBoots · 1,000 IU a serving · £1.33 a month · a pack lasts 3 months4p£4.00View at Boots

Extra Strength Vitamin D 75 µg Food Supplement 90 TabletsBoots · 3,000 IU a serving · £1.33 a month · a pack lasts 9 months4p£12.00View at Boots

This productHealf · 4,000 IU a serving · £1.34 a month · a pack lasts 1.3 years4pshown above

Switching to the Lloyds Pharmacy pack saves 7p a month at the same 1,000 IU dose.

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

Pack sizes

Pack	Price	Per dose	A year
120 capsulesthis pack	£21.39	4p	£16.27
60 capsules	£10.99	5p	£16.71

This pack is the cheapest of the 2 sizes per dose.

On the label

Vitamin D3 · Vitamin D3: 4,000 IU per serving (stated on the label)
Pack: 120 capsules · 120 servings · 1 capsule(s) a serving
Cost per serving: 18p (120 servings in the pack)

More label details

Claimed on the listing: vegetarian
Sold by: Healf
What the listing says: “120 capsules” · “one (1) vegetable capsule daily” · “(4000 IU, as cholecalciferol)”

Ingredients

Vitamin D3 (as cholecalciferol), Microcrystalline Cellulose, Maltodextrin, Ethyl Cellulose, Hydroxypropylmethyl Cellulose, Vegetable Magnesium Stearate.

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

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Daily doseIUFordays

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

Price history

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check: £21.39Healf
First recorded: £21.391 Oct
Checked on: 20 dayssince 1 Oct

Pack price at each check.

1 OctFirst checked at Healf: £21.39

Questions about this product

How much does Solgar Vitamin D3 4000IU cost per 1,000 IU?

4p per 1,000 IU, from £21.39 for 120 capsules at Healf, checked on 20 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 58th of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

1.3 years at one 1,000 IU dose. The pack holds 480,000 IU in total.

About Solgar

All 84 Solgar products, priced per dose

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