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.
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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”.
Preferences
Seller-stated only: vegan means the seller says vegan.
Muscles
926 capsules across 30 ingredientsIngredients here hold register claims relating to normal muscle function or muscle protein, quoted exactly on their pages. Resistance exercise and overall protein intake are the fundamentals the claims assume; the NHS exercise guidance below is a good starting point.
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 normal muscle function”
Vitamin D
2 authorised claims · 232 capsules · ingredient page- “Vitamin D contributes to the maintenance of normal muscle function”
- “Vitamin D helps to reduce the risk of falling associated with postural instability and muscle weakness. Falling is a risk factor for bone fractures among men and women 60 years of age and older.”
Calcium
1 authorised claim · 96 capsules · ingredient page- “Calcium contributes to normal muscle function”
Potassium
1 authorised claim · 32 capsules · ingredient page- “Potassium contributes to normal muscle function”
creatine
2 authorised claims · 20 capsules · ingredient page- “Daily creatine consumption can enhance the effect of resistance training on muscle strength in adults over the age of 55.”
- “Creatine increases physical performance in successive bursts of short-term, high intensity exercise”
Protein
2 authorised claims · 1 capsule · ingredient page- “Protein contributes to a growth in muscle mass”
- “Protein contributes to the maintenance of muscle mass”
Assessed by the register and not authorised
The register looked at claims for these relating to muscles and turned them down. Sellers may not make them. Prices are shown for ingredients you named; the rest link to their register page.
- Zinc· 1 refused · 249
- Iron· 1 refused · 87
- Vitamin A· 1 refused · 54
- Coenzyme Q10· 2 refused · 40
- L-Arginine· 3 refused · 35
- L-Tyrosine· 1 refused · 35
- Taurine· 1 refused · 31
- L-Glutamine· 6 refused · 29
- L-Lysine· 1 refused · 18
- Caffeine· 2 refused · 10
- Amino Acids· 1 refused · 9
- L-Carnitine· 3 refused · 9
- HMB· 5 refused · 5
- Phosphatidylcholine· 2 refused · 4
- Beta Alanine· 14 refused · 3
- Cordyceps sinensis· 1 refused · 3
- Green Lipped Mussel· 1 refused · 2
- Sodium· 1 refused · 2
- Bovine Colostrum· 3 refused · 1
- Branched Chain Amino Acids· 8 refused · 1
- Citrulline Malate· 2 refused · 1
- Conjugated Linoleic Acid· 4 refused · 1
- L-Carnosine· 1 refused · 1
- Whey Protein· 8 refused · 1
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