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Home › Vitamins › Niacin (vitamin B3)

MyvitaminsVitamins

Carb Metaboliser Capsules, 30 capsules

£4.99 for 30 capsules at Myprotein. 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£20.79One 500 mg dose is our comparison unit for niacin (vitamin B3). It is not a recommendation.
A day£20.79
A week£145.54
A month£623.75
A year£7588.96

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

How we worked it out

Niacin (vitamin B3)

  • Servings: 30 ÷ 2 per serving = 15
  • In the pack: 15 × 8 mg = 120 mg
  • £4.99 ÷ 120 mg × 500 mg = £20.79 per 500 mg
  • A week £20.79 × 7 = £145.54 · a month × 30 = £623.75 · a year × 365 = £7588.96
  • Amount per serving: stated on the label.

Vitamin B12

  • Servings: 30 ÷ 2 per serving = 15
  • In the pack: 15 × 5 µg = 75 µg
  • £4.99 ÷ 75 µg × 1 mg = £66.53 per 1 mg
  • A week £66.53 × 7 = £465.73 · a month × 30 = £1996.00 · a year × 365 = £24284.67
  • Amount per serving: stated on the label.

Vitamin B6

  • Servings: 30 ÷ 2 per serving = 15
  • In the pack: 15 × 1.4 mg = 21 mg
  • £4.99 ÷ 21 mg × 50 mg = £11.88 per 50 mg
  • A week £11.88 × 7 = £83.17 · a month × 30 = £356.43 · a year × 365 = £4336.55
  • 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: niacin (vitamin B3)

Compare every product in this form →
HealthAidVitamin B3 250mg 90 TabletsCheapest per 500 mgLloyds Pharmacy · 250 mg a serving · £7.35 a month · a pack lasts 45 days25p£11.03View at Lloyds Pharmacy (opens in a new tab)
This productMyprotein · 8 mg a serving · £623.75 a month · a pack lasts under a day£20.79shown above

Ranked purely by price per 500 mg. 116 combination products also contain niacin (vitamin B3).

How it compares: vitamin B12 form not stated

All 23, ranked →
ZipVitVitamin B12 1100mcgCheapest per 1 mgZipVit · 1.1 mg a serving · 64p a month · a pack lasts 1.1 years2p£8.49View at ZipVit (opens in a new tab)
Wellthy by Boots Daily Nutrition Triple Blend Vitamin B12 1000ug 365 TabletsBoots · 1 mg a serving · 82p a month · a pack lasts 1 year3p£10.00View at Boots (opens in a new tab)
Adenosyl/Hydroxy B12Healf · 2 mg a serving · £3.58 a month · a pack lasts 6 months12p£21.49View at Healf (opens in a new tab)
This productMyprotein · 5 µg a serving · £1996.00 a month · a pack lasts under a day£66.53shown above

Ranked purely by price per 1 mg. 65 combination products also contain vitamin B12.

How it compares: vitamin B6 pyridoxine HCl

All 6, ranked →
ZipVitVitamin B6 50mgCheapest per 50 mgZipVit · 50 mg a serving · £1.00 a month · a pack lasts 12 months3p£11.99View at ZipVit (opens in a new tab)
Vitamin B6 Tablets 50mgSimply Supplements · 50 mg a serving · £1.11 a month · a pack lasts 12 months4p£13.29View at Simply Supplements (opens in a new tab)
Vitamin B6 100mgHealf · 100 mg a serving · £1.39 a month · a pack lasts 7 months5p£9.25View at Healf (opens in a new tab)
This productMyprotein · 1.4 mg a serving · £356.43 a month · a pack lasts under a day£11.88shown above

Ranked purely by price per 50 mg. 280 combination products also contain vitamin B6.

On the label

Niacin (vitamin B3) · Niacin (nicotinic acid)
8 mg per serving (stated on the label)
Vitamin B12 · Form not stated
5 µg per serving (stated on the label)
Pack
30 capsules · 15 servings · 2 capsule(s) a serving
Cost per serving
33p (15 servings in the pack)
More label details
Vitamin B6 · Pyridoxine HCl
1.4 mg per serving (stated on the label)
Barcode
5059883173276
Sold by
Myprotein
What the listing says
“30Capsules” · “15 (30 Capsules)” · “Serving Size - 2 Capsules” · “Niacin ; 8 mg ; 50%”
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One 500 mg dose is our comparison unit, not a recommendation.

Price history

2 price changes since 3 October 2026. Checked on 18 days, most recently 20 October 2026.

Lowest recorded
£4.9919 Oct
Highest recorded
£8.4913 Oct
First recorded
£7.993 Oct
Checked on
18 dayssince 3 Oct
Pack price at each check.
  1. Down at Myprotein: £8.49 → £4.99 (−41%)
  2. Up at Myprotein: £7.99 → £8.49 (+6.3%)
  3. First checked at Myprotein: £7.99

Questions about this product

How much does Myvitamins Carb Metaboliser Capsules cost per 500 mg?

£20.79 per 500 mg, from £4.99 for 30 capsules at Myprotein, checked on 20 October 2026.

How long does one pack last?

under a day at one 500 mg dose. The pack holds 120 mg in total.

How much does Myvitamins Carb Metaboliser Capsules cost per 1 mg?

£66.53 per 1 mg, from £4.99 for 30 capsules at Myprotein, checked on 20 October 2026.

How long does one pack last?

under a day at one 1 mg dose. The pack holds 75 µg in total.

How much does Myvitamins Carb Metaboliser Capsules cost per 50 mg?

£11.88 per 50 mg, from £4.99 for 30 capsules at Myprotein, checked on 20 October 2026.

How long does one pack last?

under a day at one 50 mg dose. The pack holds 21 mg in total.

About Myvitamins

Founded 2012 · Manchester, England · Part of THG plc

Myvitamins is a vitamins and supplements brand launched in August 2012 by The Hut Group, now THG plc, as a sister brand to Myprotein. It is run by THG Nutrition, part of Manchester-based THG.

All 118 Myvitamins products, priced per doseVisit Myvitamins (opens in a new tab)

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