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Calcium + Vitamin D3 & K1 1000mg, 270 capsules

£19.99 for 270 capsules at Bulk. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 500 mg calcium19pOne 500 mg dose is our comparison unit for calcium. It is not a recommendation.
A day19p
A week£1.30
A month£5.55
A year£67.56

At one 500 mg dose a day, this pack lasts 4 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Calcium

  • Servings: 270 ÷ 1 per serving = 270
  • In the pack: 270 × 200 mg = 54 g
  • £19.99 ÷ 54 g × 500 mg = 18.5p per 500 mg calcium
  • A week 18.5p × 7 = £1.30 · a month × 30 = £5.55 · a year × 365 = £67.56
  • Amount per serving: stated on the label.

Vitamin D3

  • Servings: 270 ÷ 1 per serving = 270
  • In the pack: 270 × 1,000 IU = 270,000 IU
  • £19.99 ÷ 270,000 IU × 1,000 IU = 7.4p per 1,000 IU
  • A week 7.4p × 7 = 52p · a month × 30 = £2.22 · a year × 365 = £27.02
  • Amount per serving: stated on the label.

Vitamin K1

  • Servings: 270 ÷ 1 per serving = 270
  • In the pack: 270 × 50 µg = 13.5 mg
  • £19.99 ÷ 13.5 mg × 100 µg = 14.8p per 100 µg
  • A week 14.8p × 7 = £1.04 · a month × 30 = £4.44 · a year × 365 = £54.05
  • 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.

How it compares: calcium citrate

All 5, ranked →
Calcium Citrate With Vitamin DCheapest per 500 mg calciumHealf · 1 g a serving · £5.25 a month · a pack lasts 4 months17p£20.99View at Healf (opens in a new tab)
Calcium Citrate With Vitamin DHealf · 1 g a serving · £6.19 a month · a pack lasts 30 days21p£6.19View at Healf (opens in a new tab)
Calcium Citrate 800mgLamberts Healthcare (Nature's Best) · 800 mg a serving · £6.23 a month · a pack lasts 3 months21p£19.95View at Lamberts Healthcare (opens in a new tab)
This productBulk · 200 mg a serving · £5.55 a month · a pack lasts 4 months19pshown above

Ranked purely by price per 500 mg calcium. 42 combination products also contain calcium.

How it compares: 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)
WeightWorldVitamin D3 + K2 (MK7) TabletsWeightWorld · 4,000 IU a serving · 21p a month · a pack lasts 4 years1p£9.99View at WeightWorld (opens in a new tab)
This productBulk · 1,000 IU a serving · £2.22 a month · a pack lasts 9 months7pshown above

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

How it compares: vitamin K1

Compare every product in this form →
Bio-K-Mulsion®Cheapest per 100 µgHealf · 500 µg a serving · 25p a month · a pack lasts 10.3 years1p£31.82View at Healf (opens in a new tab)
Vitamin KHealf · 1 mg a serving · £1.20 a month · a pack lasts 1.6 years4p£23.99View at Healf (opens in a new tab)
Designs for HealthLiposomal D Supreme liquidHealf · 200 µg a serving · £7.05 a month · a pack lasts 7 months23p£46.99View at Healf (opens in a new tab)
This productBulk · 50 µg a serving · £4.44 a month · a pack lasts 4 months15pshown above

Ranked purely by price per 100 µg. 22 combination products also contain vitamin K1.

On the label

Calcium · Citrate
200 mg per serving (stated on the label)
Vitamin D3 · Vitamin D3
1,000 IU per serving (stated on the label)
Pack
270 capsules · 270 servings · 1 capsule(s) a serving
Cost per serving
7p (270 servings in the pack)
More label details
Vitamin K1 · Vitamin K1
50 µg per serving (stated on the label)
Sold by
Bulk
What the listing says
“270 Capsules” · “Per Serving (1 Capsule)” · “Calcium ; 200 mg” · “confirmed from the retailer's own product page, not this listing's text: form id citrate; amount per serving 200.0; amount unit mg; amount refers to elemental; units per serving 1.0; pack units 270; pack unit type capsule”
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One 500 mg dose is our comparison unit, not a recommendation.

Price history

1 price change since 23 September 2026. Checked on 21 days, most recently 20 October 2026.

Lowest recorded
£16.9923 Sept
Highest recorded
£19.995 Oct
First recorded
£16.9923 Sept
Checked on
21 dayssince 23 Sept
Pack price at each check.
  1. Up at Bulk: £16.99 → £19.99 (+18%)
  2. First checked at Bulk: £16.99

Questions about this product

How much does Bulk Calcium + Vitamin D3 & K1 1000mg cost per 500 mg calcium?

19p per 500 mg calcium, from £19.99 for 270 capsules at Bulk, checked on 20 October 2026.

How long does one pack last?

4 months at one 500 mg dose. The pack holds 54 g in total.

How much does Bulk Calcium + Vitamin D3 & K1 1000mg cost per 1,000 IU?

7p per 1,000 IU, from £19.99 for 270 capsules at Bulk, checked on 20 October 2026.

How long does one pack last?

9 months at one 1,000 IU dose. The pack holds 270,000 IU in total.

How much does Bulk Calcium + Vitamin D3 & K1 1000mg cost per 100 µg?

15p per 100 µg, from £19.99 for 270 capsules at Bulk, checked on 20 October 2026.

How long does one pack last?

4 months at one 100 µg dose. The pack holds 13.5 mg in total.

About Bulk

Founded 2006 · Colchester, England

Bulk is a British sports nutrition company based in Colchester, Essex. Adam Rossiter and Elliot Dawes, who met at the University of Essex, started it in 2006 as Bulk Powders; it was renamed Bulk at the start of 2021, and the founders remain its majority owners.

All 133 Bulk products, priced per doseVisit Bulk (opens in a new tab)

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