We earn commission on purchases made through our links. It never affects ranking: tables are ordered purely by price per dose, and no retailer or brand can pay for position.We earn commission when you buy through our links. It never affects the ranking. Full disclosure.

perdose
Updated

Home › Vitamins › Vitamin D3

Quicksilver ScientificVitamins

D3K2, 50 ml

£36.99 for 50 ml at Healf. That works out at 15p per 1,000 IU, which ranks it 134th of the 207 vitamin D3 products we price across 20 UK retailers.

What it really costs, per 1,000 IU15pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day15p
A week£1.04
A month£4.44
A year£54.01

At one 1,000 IU dose a day, this pack lasts 8 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Vitamin D3

  • Servings: 50 ÷ 0.5 per serving = 100
  • In the pack: 100 × 2,500 IU = 250,000 IU
  • £36.99 ÷ 250,000 IU × 1,000 IU = 14.8p per 1,000 IU
  • A week 14.8p × 7 = £1.04 · a month × 30 = £4.44 · a year × 365 = £54.01
  • Amount per serving: stated on the label.

Vitamin K2

  • Servings: 50 ÷ 0.5 per serving = 100
  • In the pack: 100 × 90 µg = 9 mg
  • £36.99 ÷ 9 mg × 100 µg = 41.1p per 100 µg
  • A week 41.1p × 7 = £2.88 · a month × 30 = £12.33 · a year × 365 = £150.01
  • 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 →
Liposomal D3K2Healf · 2,500 IU a serving · £4.20 a month · a pack lasts 5 months14p£20.99View at Healf (opens in a new tab)
Vitamin D-1,000Healf · 1,000 IU a serving · £4.33 a month · a pack lasts 6 months14p£25.99View at Healf (opens in a new tab)
Vitamin D-1,000Healf · 1,000 IU a serving · £4.34 a month · a pack lasts 3 months14p£13.02View at Healf (opens in a new tab)
Vitamin D3 VeganW-Wellness · 2,000 IU a serving · £4.36 a month · a pack lasts 8 months15p£34.90View at W-Wellness (opens in a new tab)
WeightWorldVitamin D3 Gummies for KidsWeightWorld · 1,000 IU a serving · £4.37 a month · a pack lasts 4 months15p£17.49View at WeightWorld (opens in a new tab)
This productHealf · 2,500 IU a serving · £4.44 a month · a pack lasts 8 months15pshown above

Switching to the Healf pack saves 24p a month at the same 1,000 IU dose.

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

How it compares: 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)
WeightWorldVitamin D3 + K2 (MK7) TabletsWeightWorld · 125 µg a serving · 66p a month · a pack lasts 1.3 years2p£9.99View at WeightWorld (opens in a new tab)
This productHealf · 90 µg a serving · £12.33 a month · a pack lasts 3 months41pshown above

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

On the label

Vitamin D3 · Vitamin D3
2,500 IU per serving (stated on the label)
Vitamin K2 · MK-7
90 µg per serving (stated on the label)
Pack
50 ml · 100 servings · 0.5 ml a serving
Cost per serving
37p (100 servings in the pack)
More label details
Sold by
Healf
What the listing says
“50ml” · “Servings Per Container: 100” · “Serving Size: 1 Pump (0.5mL)” · “(2500 IU) ; 62.5 mcg ; 1250%”
Ingredients

Menaquinone MK-7 (Vitamin K2), Vitamin D (as cholecalciferol (D3)) (2500 IU), Water, Glycerin, Ethanol, Tocofersolan, Highly Purified Phospholipids, Natural Citrus Oils, Natural Mixed Tocopherols

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

Is something wrong? Tell us

Add to your basket

View basket

Your basket prices everything you take together: whole packs, delivery included, from as few websites as you like.

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

Price history

2 price changes since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Lowest recorded
£25.501 Oct
Highest recorded
£38.992 Oct
First recorded
£25.501 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £38.99 → £36.99 (−5.1%)
  2. Up at Healf: £25.50 → £38.99 (+53%)
  3. First checked at Healf: £25.50

Questions about this product

How much does Quicksilver Scientific D3K2 cost per 1,000 IU?

15p per 1,000 IU, from £36.99 for 50 ml at Healf, checked on 20 October 2026.

Is it the cheapest vitamin D3 in the UK?

No, it is 134th of 207. High-Strength Vitamin D3 Tablets at WeightWorld works out at 1p per 1,000 IU.

How long does one pack last?

8 months at one 1,000 IU dose. The pack holds 250,000 IU in total.

How much does Quicksilver Scientific D3K2 cost per 100 µg?

41p per 100 µg, from £36.99 for 50 ml at Healf, checked on 20 October 2026.

How long does one pack last?

3 months at one 100 µg dose. The pack holds 9 mg in total.

About Quicksilver Scientific

All 22 Quicksilver Scientific products, priced per dose

More from Quicksilver Scientific

Keep comparing

All vitamin D3Every form, cheapest per 1,000 IU firstVitamin D3 guideWhat it is, why people take it, how the forms differQuicksilver ScientificAll 22 products from this brand, per doseVitaminsEverything else we price in this categoryVitamin D3 price historyEvery vitamin D3 product's price per dose and price historyBuild a basketThe cheapest way to buy several at onceHow we compareWhere every number on this page comes from