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← All supplements
Amino acidsWeak evidence

Gelatin

Also known as: beef gelatin, cooked collagen

Gelatin is partly broken-down collagen from animal skin and bones that sets when cooled in water. It is rich in glycine, proline and hydroxyproline but lacks tryptophan, so it is not a complete protein.

What it is used for

  • joint and tendon support (e.g. with vitamin C before training) – weak evidence from small studies
  • skin – weak evidence; more data exist for hydrolysed collagen
  • source of glycine – weak evidence for sleep and digestion

Forms and how they differ

gelatin powder

sets, good for jellies, soups and broths

hydrolysed collagen

same amino acids, does not set, dissolves more easily

grass-fed beef

describes the animals' origin; the amino acids are the same

When to take it

Any time; for tendons 30–60 minutes before exercise with vitamin C.

Pairs well with

Vitamin C, enough dietary protein.

Do not combine / separate

Do not count it as a complete protein source.

Watch out for

With kidney disease watch your total protein intake. With religious or ethical restrictions check the source (beef/pork). During pregnancy or breastfeeding, with kidney or liver disease, or when taking medicines, consult your doctor.

Safety

Safe as a food. Do not exceed the label dose.

Practical tip

Homemade bone broth is a natural source of gelatin and cheaper than a supplement.

Products containing Gelatin 1

Gelatinbovine gelatinJointsSkinDigestion & gutSleep
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

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From the same group

Acetyl-L-carnitineWeak evidenceAlmond proteinWeak evidenceAmino acid complexWeak evidenceBCAAWeak evidenceBeef proteinModerate evidenceCaseinStrong evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.