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VitaminsVegan

Vitamin D3 1000iu, 180 capsules

£9.95 for 180 capsules at Lamberts Healthcare (Nature's Best). That works out at 6p per 1,000 IU, which ranks it 71st of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU6pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.

A day6p

A week39p

A month£1.66

A year£20.18

At one 1,000 IU dose a day, this pack lasts 6 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Servings: 180 ÷ 1 per serving = 180
In the pack: 180 × 1,000 IU = 180,000 IU
£9.95 ÷ 180,000 IU × 1,000 IU = 5.53p per 1,000 IU
A week 5.53p × 7 = 39p · a month × 30 = £1.66 · a year × 365 = £20.18
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 →

Vitamin D3 2500 IU with K2 120 mcgHealf · 2,500 IU a serving · £1.48 a month · a pack lasts 7 months5p£11.10View at Healf

WeightWorldVitamin D3 + K2 (MK-7) GummiesWeightWorld · 4,000 IU a serving · £1.50 a month · a pack lasts 12 months5p£17.99View at WeightWorld

Vitamin D3 4000iu 120 CapsulesHealthspan · 4,000 IU a serving · £1.56 a month · a pack lasts 1.3 years5p£24.99View at Healthspan

Vitamin D3 50 Plus 180 CapsulesHealthspan · 2,000 IU a serving · £1.58 a month · a pack lasts 12 months5p£18.99View at Healthspan

Vitamin D3 + K2Healf · 5,000 IU a serving · £1.65 a month · a pack lasts 10 months5p£16.45View at Healf

This productLamberts Healthcare (Nature's Best) · 1,000 IU a serving · £1.66 a month · a pack lasts 6 months6pshown above

Switching to the Healf pack saves 18p 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: 180 capsules · 180 servings · 1 capsule(s) a serving
Cost per serving: 6p (180 servings in the pack)

More label details

Claimed on the listing: vegan
Barcode: 5055148409630
Sold by: Lamberts Healthcare (Nature's Best)
What the listing says: “Specifications: 180 Capsules” · “Level/Strength 1000iu Vitamin D3 (Cholecalciferol)”

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Daily doseIUFordays

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

Price history

1 price change since 21 September 2026. Checked on 27 days, most recently 20 October 2026.

Lowest recorded: £8.5021 Sept
Highest recorded: £9.956 Oct
First recorded: £8.5021 Sept
Checked on: 27 dayssince 21 Sept

Pack price at each check.

6 Oct Up at Lamberts Healthcare (Nature's Best): £8.50 → £9.95 (+17%)
21 SeptFirst checked at Lamberts Healthcare (Nature's Best): £8.50

Questions about this product

How much does Nature's Best Vitamin D3 1000iu cost per 1,000 IU?

6p per 1,000 IU, from £9.95 for 180 capsules at Lamberts Healthcare (Nature's Best), checked on 20 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 71st of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

6 months at one 1,000 IU dose. The pack holds 180,000 IU in total.

About Nature's Best

Founded 1981 · Tunbridge Wells, England · Part of Procter & Gamble

Nature's Best is a vitamins and supplements brand based in Tunbridge Wells, Kent, that has sold direct to the public since 1981. It is a trading name of Lamberts Healthcare Ltd, which also supplies practitioners and pharmacists under the Lamberts name.

All 136 Nature's Best products, priced per dose Visit Nature's Best (opens in a new tab)

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