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OrganifiVitaminsVegan

Immunity

£22.99 for 15 servings at Healf. 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 1,000 IU80pOne 1,000 IU dose is our comparison unit for vitamin D3. It is not a recommendation.
A day80p
A week£5.59
A month£23.95
A year£291.37

At one 1,000 IU dose a day, this pack lasts 29 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Vitamin D3

  • In the pack: 15 × 1,920 IU = 28,800 IU
  • £22.99 ÷ 28,800 IU × 1,000 IU = 79.8p per 1,000 IU
  • A week 79.8p × 7 = £5.59 · a month × 30 = £23.95 · a year × 365 = £291.37
  • Amount per serving: stated on the label.

Zinc

  • In the pack: 15 × 5 mg = 75 mg
  • £22.99 ÷ 75 mg × 15 mg = £4.60 per 15 mg zinc
  • A week £4.60 × 7 = £32.19 · a month × 30 = £137.94 · a year × 365 = £1678.27
  • 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: 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 productHealf · 1,920 IU a serving · £23.95 a month · a pack lasts 29 days80pshown above

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

How it compares: zinc bisglycinate

All 10, ranked →
WeightWorldZinc Bisglycinate TabletsCheapest per 15 mg zincWeightWorld · 50 mg a serving · 45p a month · a pack lasts 1.8 years1p£9.99View at WeightWorld (opens in a new tab)
ZipVitZinc Bisglycinate 25mgZipVit · 25 mg a serving · 49p a month · a pack lasts 1.7 years2p£9.99View at ZipVit (opens in a new tab)
VitaBrightZinc Bisglycinate Tablets with CopperVitaBright · 50 mg a serving · 58p a month · a pack lasts 1.8 years2p£12.99View at VitaBright (opens in a new tab)
This productHealf · 5 mg a serving · £137.94 a month · a pack lasts 5 days£4.60shown above

Ranked purely by price per 15 mg zinc. 115 combination products also contain zinc.

On the label

Vitamin D3 · Vitamin D3
1,920 IU per serving (stated on the label)
Zinc · Bisglycinate
5 mg per serving (stated on the label)
Pack
15 servings · 1 sachet(s) a serving
Cost per serving
£1.53 (15 servings in the pack)
More label details
Claimed on the listing
vegan
Sold by
Healf
What the listing says
“Servings Per Container: 15” · “Serving Size: 1 Packet (7.04g)” · “Vitamin D ; 48 mcg ; 960%”
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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
£22.99Healf
First recorded
£22.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £22.99

Questions about this product

How much does Organifi Immunity cost per 1,000 IU?

80p per 1,000 IU, from £22.99 for 15 servings at Healf, checked on 20 October 2026.

How long does one pack last?

29 days at one 1,000 IU dose. The pack holds 28,800 IU in total.

How much does Organifi Immunity cost per 15 mg zinc?

£4.60 per 15 mg zinc, from £22.99 for 15 servings at Healf, checked on 20 October 2026.

How long does one pack last?

5 days at one 15 mg dose. The pack holds 75 mg in total.

About Organifi

All 9 Organifi products, priced per dose

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