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Vitamin D3 + K2 Drops

£20.99 for 900 servings at Healf. That works out at 5p per 1,000 IU, which ranks it 61st of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU5pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day5p
A week33p
A month£1.40
A year£17.03

At one 1,000 IU dose a day, this pack lasts 1.2 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: 900 × 500 IU = 450,000 IU
  • £20.99 ÷ 450,000 IU × 1,000 IU = 4.66p per 1,000 IU
  • A week 4.66p × 7 = 33p · a month × 30 = £1.40 · a year × 365 = £17.03
  • Amount per serving: stated on the label.

Vitamin K2

  • In the pack: 900 × 50 µg = 45 mg
  • £20.99 ÷ 45 mg × 5 mg = £2.33 per 5 mg
  • A week £2.33 × 7 = £16.33 · a month × 30 = £69.97 · a year × 365 = £851.26
  • 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 →
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 (opens in a new tab)
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 (opens in a new tab)
Vitamin D3 4000IUHealf · 4,000 IU a serving · £1.34 a month · a pack lasts 1.3 years4p£21.39View at Healf (opens in a new tab)
Vitamin D3 & K2 CapsulesMyprotein · 4,000 IU a serving · £1.37 a month · a pack lasts 4 months5p£5.49View at Myprotein (opens in a new tab)
Vitamin D3 4000IUHealf · 4,000 IU a serving · £1.37 a month · a pack lasts 8 months5p£10.99View at Healf (opens in a new tab)
This productHealf · 500 IU a serving · £1.40 a month · a pack lasts 1.2 years5pshown above

Switching to the Boots 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.

Cheaper vitamin K2 MK-4

All 4, ranked →
Vitamin K2Cheapest per 5 mgHealf · 15 mg a serving · £7.56 a month · a pack lasts 8 months25p£60.49View at Healf (opens in a new tab)
Vitamin D and K2Healf · 200 µg a serving · £29.99 a month · a pack lasts 24 days£1.00£23.99View at Healf (opens in a new tab)
This productHealf · 50 µg a serving · £69.97 a month · a pack lasts 9 days£2.33shown above

Switching to the Healf pack saves £62.41 a month at the same 5 mg dose.

Ranked purely by price per 5 mg. 11 combination products also contain vitamin K2.

On the label

Vitamin D3 · Vitamin D3
500 IU per serving (stated on the label)
Vitamin K2 · MK-4
50 µg per serving (stated on the label)
Pack
900 servings · 1 drop(s) a serving
Cost per serving
2p (900 servings in the pack)
More label details
Sold by
Healf
What the listing says
“Servings Per Container: 900” · “Serving Size: 1 Drop” · “Vitamin D3 (as Cholecalciferol) ; 12.5 mcg ; 250%”
Ingredients

Vitamin K2 (as Menaquinone-4), Vitamin D3 (as Cholecalciferol), Extra Virgin Olive Oil

From the Healf 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 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check
£20.99Healf
First recorded
£20.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £20.99

Questions about this product

How much does Seeking Health Vitamin D3 + K2 Drops cost per 1,000 IU?

5p per 1,000 IU, from £20.99 for 900 servings at Healf, checked on 20 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 61st of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

1.2 years at one 1,000 IU dose. The pack holds 450,000 IU in total.

How much does Seeking Health Vitamin D3 + K2 Drops cost per 5 mg?

£2.33 per 5 mg, from £20.99 for 900 servings at Healf, checked on 20 October 2026.

Is it the cheapest vitamin K2 MK-4 in the UK?

No, it is 3rd of 4. Vitamin K2 at Healf works out at 25p per 5 mg.

How long does one pack last?

9 days at one 5 mg dose. The pack holds 45 mg in total.

About Seeking Health

All 49 Seeking Health products, priced per dose

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