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ThorneVitamins

High Potency Vitamin C, 236 g

£23.42 for 236 g 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 g24pOne 1 g dose is our comparison unit for vitamin C. It is not a recommendation.
A day24p
A week£1.68
A month£7.22
A year£87.86

At one 1 g dose a day, this pack lasts 3 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Vitamin C

  • Servings: 236 ÷ 5.7 per serving = 41.4
  • In the pack: 41.4 × 2.35 g = 97.3 g
  • £23.42 ÷ 97.3 g × 1 g = 24.1p per 1 g
  • A week 24.1p × 7 = £1.68 · a month × 30 = £7.22 · a year × 365 = £87.86
  • Amount per serving: stated on the label.

Calcium

  • Servings: 236 ÷ 5.7 per serving = 41.4
  • In the pack: 41.4 × 350 mg = 14.5 g
  • £23.42 ÷ 14.5 g × 500 mg = 80.8p per 500 mg calcium
  • A week 80.8p × 7 = £5.66 · a month × 30 = £24.24 · a year × 365 = £294.95
  • Amount per serving: stated on the label.

Magnesium

  • Servings: 236 ÷ 5.7 per serving = 41.4
  • In the pack: 41.4 × 350 mg = 14.5 g
  • £23.42 ÷ 14.5 g × 100 mg = 16.2p per 100 mg magnesium
  • A week 16.2p × 7 = £1.13 · a month × 30 = £4.85 · a year × 365 = £58.99
  • Amount per serving: stated on the label.

Potassium

  • Servings: 236 ÷ 5.7 per serving = 41.4
  • In the pack: 41.4 × 99 mg = 4.1 g
  • £23.42 ÷ 4.1 g × 200 mg = £1.14 per 200 mg potassium
  • A week £1.14 × 7 = £8.00 · a month × 30 = £34.28 · a year × 365 = £417.10
  • 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 C

All 113, ranked →
Vitamin C Plus TabletsCheapest per 1 gMyprotein · 1 g a serving · £1.00 a month · a pack lasts 6 months3p£5.99View at Myprotein (opens in a new tab)
Vitamin C Crystals PowderHealf · 1.1 g a serving · £1.01 a month · a pack lasts 7 months3p£7.61View at Healf (opens in a new tab)
Vitamin C PowderLamberts Healthcare (Nature's Best) · 1 g a serving · £1.50 a month · a pack lasts 8 months5p£12.50View at Lamberts Healthcare (opens in a new tab)
This productHealf · 2.35 g a serving · £7.22 a month · a pack lasts 3 months24pshown above

Ranked purely by price per 1 g. 950 combination products also contain vitamin C.

How it compares: other forms of calcium

All 25, ranked →
Calcium 1000mg & Vitamin D3 400iu TabletsCheapest per 500 mg calciumSimply Supplements · 1 g a serving · 94p a month · a pack lasts 12 months3p£11.29View at Simply Supplements (opens in a new tab)
Calcium & Magnesium TabletsMyprotein · 800 mg a serving · £2.29 a month · a pack lasts 5 months8p£10.99View at Myprotein (opens in a new tab)
ZipVitCalcium 400mg with Magnesium 200mgZipVit · 400 mg a serving · £2.29 a month · a pack lasts 9 months8p£21.99View at ZipVit (opens in a new tab)
This productHealf · 350 mg a serving · £24.24 a month · a pack lasts 29 days81pshown above

Ranked purely by price per 500 mg calcium. 216 combination products also contain calcium.

How it compares: magnesium blends and other forms

All 79, ranked →
ZipVitMagnesium 500mgCheapest per 100 mg magnesiumZipVit · 500 mg a serving · 33p a month · a pack lasts 4.9 years1p£19.99View at ZipVit (opens in a new tab)
Magnesium Glycinate X3Protein Works · 1.81 g a serving · 40p a month · a pack lasts 2.2 years1p£10.99View at Protein Works (opens in a new tab)
Magnesium CapsHealf · 500 mg a serving · 41p a month · a pack lasts 1.4 years1p£6.75View at Healf (opens in a new tab)
This productHealf · 350 mg a serving · £4.85 a month · a pack lasts 5 months16pshown above

Ranked purely by price per 100 mg magnesium. 236 combination products also contain magnesium.

How it compares: other forms of potassium

Compare every product in this form →
Ionic Potassium Liquid ConcentrateCheapest per 200 mg potassiumHealf · 300 mg a serving · £15.60 a month · a pack lasts 38 days52p£19.50View at Healf (opens in a new tab)
Ionic Potassium Liquid ConcentrateMyprotein · 300 mg a serving · £16.00 a month · a pack lasts 38 days53p£20.00View at Myprotein (opens in a new tab)
This productHealf · 99 mg a serving · £34.28 a month · a pack lasts 20 days£1.14shown above

Ranked purely by price per 200 mg potassium. 58 combination products also contain potassium.

On the label

Vitamin C · Standard (ascorbic acid and ascorbates)
2.35 g per serving (stated on the label)
Calcium · Other forms
350 mg per serving (stated on the label)
Pack
236 g · 41.4 servings · 5.7 g a serving
Cost per serving
57p (41.4 servings in the pack)
More label details
Magnesium · Blends and other forms
350 mg per serving (stated on the label)
Potassium · Other forms
99 mg per serving (stated on the label)
Sold by
Healf
What the listing says
“236g” · “Servings Per Container: 42” · “Serving Size: 1 Scoop (5.7g)” · “Calcium Carbonate and Ascorbic Acid) ; 350 mg”
Ingredients

Vitamin C (as Ascorbic Acid), Calcium (as Ascorbate Reacted from Calcium Carbonate and Ascorbic Acid), Magnesium (as Ascorbate Reacted from Magnesium Carbonate and Ascorbic Acid), Potassium (as Ascorbate Reacted from Potassium Bicarbonate And Ascorbic Acid)

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

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One 1 g 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
£23.42Healf
First recorded
£23.421 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £23.42

Questions about this product

How much does Thorne High Potency Vitamin C cost per 500 mg calcium?

81p per 500 mg calcium, from £23.42 for 236 g at Healf, checked on 20 October 2026.

How long does one pack last?

29 days at one 500 mg dose. The pack holds 14.5 g in total.

How much does Thorne High Potency Vitamin C cost per 100 mg magnesium?

16p per 100 mg magnesium, from £23.42 for 236 g at Healf, checked on 20 October 2026.

How long does one pack last?

5 months at one 100 mg dose. The pack holds 14.5 g in total.

How much does Thorne High Potency Vitamin C cost per 200 mg potassium?

£1.14 per 200 mg potassium, from £23.42 for 236 g at Healf, checked on 20 October 2026.

How long does one pack last?

20 days at one 200 mg dose. The pack holds 4.1 g in total.

How much does Thorne High Potency Vitamin C cost per 1 g?

24p per 1 g, from £23.42 for 236 g at Healf, checked on 20 October 2026.

How long does one pack last?

3 months at one 1 g dose. The pack holds 97.3 g in total.

About Thorne

All 123 Thorne products, priced per dose

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