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Vitamin D3 + K2 (MK7) Tablets

£9.99 for 365 servings at WeightWorld. That works out at 1p per 1,000 IU, which ranks it 3rd of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU1pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day1p
A week5p
A month21p
A year£2.50

At one 1,000 IU dose a day, this pack lasts 4 years. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Vitamin D3

  • In the pack: 365 × 4,000 IU = 1,460,000 IU
  • £9.99 ÷ 1,460,000 IU × 1,000 IU = 0.684p per 1,000 IU
  • A week 0.684p × 7 = 5p · a month × 30 = 21p · a year × 365 = £2.50
  • Amount per serving: stated on the label.

Vitamin K2

  • In the pack: 365 × 125 µg = 45.6 mg
  • £9.99 ÷ 45.6 mg × 100 µg = 2.19p per 100 µg
  • A week 2.19p × 7 = 15p · a month × 30 = 66p · a year × 365 = £7.99
  • 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 →
WeightWorldHigh-Strength Vitamin D3 TabletsCheapest per 1,000 IUWeightWorld · 4,000 IU a serving · 17p a month · a pack lasts 4.4 years1p£8.99View at WeightWorld (opens in a new tab)
ZipVitVitamin D3 4000iuZipVit · 4,000 IU a serving · 17p a month · a pack lasts 4 years1p£8.49View at ZipVit (opens in a new tab)
WeightWorldThis productWeightWorld · 4,000 IU a serving · 21p a month · a pack lasts 4 years1pshown above

Switching to the WeightWorld pack saves 4p a month at the same 1,000 IU dose.

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

Cheaper vitamin K2 MK-7

All 68, ranked →
WeightWorldVitamin D3 2000IU + K2 (MK-7) TabletsCheapest per 100 µgWeightWorld · 200 µg a serving · 53p a month · a pack lasts 2 years2p£12.99View at WeightWorld (opens in a new tab)
WeightWorldVitamin K2 MK-7 TabletsWeightWorld · 200 µg a serving · 64p a month · a pack lasts 2 years2p£15.49View at WeightWorld (opens in a new tab)
WeightWorldThis productWeightWorld · 125 µg a serving · 66p a month · a pack lasts 1.3 years2pshown above

Switching to the WeightWorld pack saves 12p a month at the same 100 µg dose.

Ranked purely by price per 100 µg. 52 combination products also contain vitamin K2.

On the label

Vitamin D3 · Vitamin D3
4,000 IU per serving (stated on the label)
Vitamin K2 · MK-7
125 µg per serving (stated on the label)
Pack
365 servings · 1 tablet(s) a serving
Cost per serving
3p (365 servings in the pack)
More label details
Sold by
WeightWorld
What the listing says
“Servings per Container: 365” · “Serving Size: 1 Tablet” · “Vitamin D3 (Source : Lanolin) ; 4000 IU”
Ingredients

: Microcrystalline Cellulose, Rice Extract, Silicon Dioxide Advice Do not exceed the recommended daily dose. Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Discontinue use if any adverse reactions occur. Not intended for use by persons under the age of 18.

From the WeightWorld 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 9 October 2026. Checked on 1 day, most recently 9 October 2026.

Price at every check
£9.99WeightWorld
First recorded
£9.999 Oct
Checked on
1 daysince 9 Oct

Checked once so far, on 9 October 2026.

  1. First checked at WeightWorld: £9.99

Questions about this product

How much does WeightWorld Vitamin D3 + K2 (MK7) Tablets cost per 1,000 IU?

1p per 1,000 IU, from £9.99 for 365 servings at WeightWorld, checked on 9 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 3rd of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

4 years at one 1,000 IU dose. The pack holds 1,460,000 IU in total.

How much does WeightWorld Vitamin D3 + K2 (MK7) Tablets cost per 100 µg?

2p per 100 µg, from £9.99 for 365 servings at WeightWorld, checked on 9 October 2026.

Is it the cheapest vitamin K2 MK-7 in the UK?

No, it is 3rd of 68. Vitamin D3 2000IU + K2 (MK-7) Tablets at WeightWorld works out at 2p per 100 µg.

How long does one pack last?

1.3 years at one 100 µg dose. The pack holds 45.6 mg in total.

About WeightWorld

All 124 WeightWorld products, priced per dose

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