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Home › Vitamins › Niacin (vitamin B3)

MyvitaminsVitamins

Carb Metaboliser Capsules, 90 capsules

£6.99 for 90 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£9.71One 500 mg dose is our comparison unit for niacin (vitamin B3). It is not a recommendation.
A day£9.71
A week£67.96
A month£291.25
A year£3543.54

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: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 8 mg = 360 mg
  • £6.99 ÷ 360 mg × 500 mg = £9.71 per 500 mg
  • A week £9.71 × 7 = £67.96 · a month × 30 = £291.25 · a year × 365 = £3543.54
  • Amount per serving: stated on the label.

Vitamin B12

  • Servings: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 5 µg = 225 µg
  • £6.99 ÷ 225 µg × 1 mg = £31.07 per 1 mg
  • A week £31.07 × 7 = £217.47 · a month × 30 = £932.00 · a year × 365 = £11339.33
  • Amount per serving: stated on the label.

Vitamin B6

  • Servings: 90 ÷ 2 per serving = 45
  • In the pack: 45 × 1.4 mg = 63 mg
  • £6.99 ÷ 63 mg × 50 mg = £5.55 per 50 mg
  • A week £5.55 × 7 = £38.83 · a month × 30 = £166.43 · a year × 365 = £2024.88
  • 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 · £291.25 a month · a pack lasts under a day£9.71shown 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 · £932.00 a month · a pack lasts under a day£31.07shown 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 · £166.43 a month · a pack lasts 1 day£5.55shown 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
90 capsules · 45 servings · 2 capsule(s) a serving
Cost per serving
16p (45 servings in the pack)
More label details
Vitamin B6 · Pyridoxine HCl
1.4 mg per serving (stated on the label)
Barcode
5059883173283
Sold by
Myprotein
What the listing says
“90Capsules” · “45 (90 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

1 price change since 3 October 2026. Checked on 18 days, most recently 20 October 2026.

Lowest recorded
£6.9919 Oct
Highest recorded
£19.493 Oct
First recorded
£19.493 Oct
Checked on
18 dayssince 3 Oct
Pack price at each check.
  1. Down at Myprotein: £19.49 → £6.99 (−64%)
  2. First checked at Myprotein: £19.49

Questions about this product

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

£9.71 per 500 mg, from £6.99 for 90 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 360 mg in total.

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

£31.07 per 1 mg, from £6.99 for 90 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 225 µg in total.

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

£5.55 per 50 mg, from £6.99 for 90 capsules at Myprotein, checked on 20 October 2026.

How long does one pack last?

1 day at one 50 mg dose. The pack holds 63 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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