Health support evidence brief
Bovine colostrum is the first milk produced by cows after calving, concentrated into powders or capsules. It is commonly promoted for gut barrier, immune support, recovery, and endurance resilience.
May support upper-respiratory symptom or exercise-associated gut-permeability outcomes, but performance and muscle-gain claims remain limited.
URS meta-analysis: colostrum reduced symptom-day incidence rate ratio to 0.56 (95% CI 0.43-0.72).
Trials use product-specific powders and varied multi-week protocols; dairy allergy and sourcing quality matter.
Evidence fits immune/gut contexts rather than IGF-1, muscle gain, or direct performance-enhancement claims.
Source Drawer
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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