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BestCapsules

Find capsules by goal

Say what you want help with. The finder shows what the GB register lets any seller claim for it, what the register assessed and refused, and the cheapest capsules per capsule for each ingredient. It quotes; it never advises.

What do you want help with?

Where the register allows less than sellers suggest

Anything you already take or are considering?

Name it and the finder says whether the register authorises any claim for it for your goals, or refused one, or has never assessed it.

  • None yet. Type an ingredient in the box above, for example “magnesium” or “turmeric”.

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Seller-stated only: vegan means the seller says vegan.

Blood sugar and Tiredness and fatigue and Stress

1325 capsules across 45 ingredients

Blood sugar. A small number of ingredients hold authorised register wording about normal blood glucose levels, quoted exactly on their pages; a much larger number of claims about blood sugar were assessed and refused. Nothing here is about treating or preventing diabetes, and anyone managing blood glucose should follow their care team's advice. Diabetes UK is the specialist charity.

Tiredness and fatigue. The register's phrase is 'a reduction of tiredness and fatigue', and a surprising number of everyday nutrients hold that authorised wording. This page shows which, quoted exactly, alongside ingredients people discuss without an authorised claim. Persistent tiredness is worth raising with a GP; the NHS link below covers self-help basics.

Stress. Very few ingredients hold authorised register claims in this area, and this page is honest about that: the split below shows what may be said and what may not. Ingredients people discuss for stress appear with their register status, and Mind's resources cover support that goes beyond nutrition.

Nothing here is medical advice. The wording is the GB register's, quoted exactly; whether a product qualifies to use it is the seller's responsibility. Speak to a GP or pharmacist before taking a supplement, especially if you are pregnant, take medicines or have a diagnosed condition. Wording from the GB nutrition and health claims register; mapping reviewed 4 September 2026.

Holds an authorised claim

Magnesium

1 authorised claim · 334 capsules · ingredient page
  • “Magnesium contributes to a reduction of tiredness and fatigue” · Tiredness and fatigue

Not authorised for stress or blood sugar: the register refused 3 claims there.

All 334 magnesium capsules

Vitamin C

1 authorised claim · 332 capsules · ingredient page
  • “Vitamin C contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

Not authorised for tiredness and fatigue: the register refused 1 claim there.

All 332 vitamin c capsules

Vitamin B6

1 authorised claim · 185 capsules · ingredient page
  • “Vitamin B6 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 185 vitamin b6 capsules

Vitamin B12

1 authorised claim · 163 capsules · ingredient page
  • “Vitamin B12 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

Not authorised for tiredness and fatigue: the register refused 1 claim there.

All 163 vitamin b12 capsules

Folate

1 authorised claim · 138 capsules · ingredient page
  • “Folate contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 138 folate capsules

Iron

1 authorised claim · 87 capsules · ingredient page
  • “Iron contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 87 iron capsules

Chromium

1 authorised claim · 62 capsules · ingredient page
  • “Chromium contributes to the maintenance of normal blood glucose levels” · Blood sugar

Not authorised for tiredness and fatigue: the register refused 1 claim there.

All 62 chromium capsules

Niacin

1 authorised claim · 46 capsules · ingredient page
  • “Niacin contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 46 niacin capsules

Pantothenic Acid

1 authorised claim · 36 capsules · ingredient page
  • “Pantothenic acid contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 36 pantothenic acid capsules

Riboflavin

1 authorised claim · 36 capsules · ingredient page
  • “Riboflavin contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 36 riboflavin capsules

Assessed by the register and not authorised

The register looked at claims for these relating to blood sugar and tiredness and fatigue and stress and turned them down. Sellers may not make them. Prices are shown for ingredients you named; the rest link to their register page.

Support & information

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