Supplement · Antioxidants, immune & general wellness
Colostrum
Also known as: Bovine colostrum
Early-milk proteins with the most promising evidence for gut and immune measures in athletes.
- Evidence
- Silver· human data
- Sources cited
- 1
- Last reviewed
- 22 July 2026
Bovine colostrum is the nutrient- and antibody-rich first milk, containing immune factors and growth factors, taken for gut and immune support and recovery.
Its more promising human evidence is around gut-barrier integrity and reducing upper-respiratory symptoms in athletes under heavy training, with weaker data for performance or body composition. It contains small amounts of IGF-1, which is unlikely to matter systemically but is worth noting for drug-tested athletes. Not suitable with dairy allergy.