Colostrum
Best for
Raise antibody defenses
Promising early signal · 10–25 g/day for 7–12 weeks · 1 meta-analysis , n=313
23 papers · 3 claims · 57 outcomes scored · 2 positive
Outcomes
What colostrum actually does, by outcome
Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.
Fewer loose stools, shorter episodes, and less fluid loss.
More antibodies in your nose, throat, and blood catching invaders early.
| Outcome | Effect | Evidence | Dose | Weeks | Rank |
|---|---|---|---|---|---|
| Reduce diarrhea and recover faster Likely benefit | | 3 meta-analyses n=592 Meta-analyzed | 400–6000 mg | 1–4 wk | #4/17 |
| Raise antibody defenses Promising early signal | | 2 meta-analyses n=313 Meta-analyzed | 10–25 g | 7–12 wk | #1/6 |
| Tighten the intestinal barrier Not enough research | | 3 RCTs n=38 | 20–500 g | 2–8 wk | — |
Recommended Colostrum products
Real products that dose Colostrum where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.
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NOW
Colostrum Powder
Well dosed 2.8 Gram(s)/day A formulaBrand audit 87/100
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Pure Encapsulations
Colostrum
Well dosed 2,700 mg/day A formulaBrand audit 78/100
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The Vitamin Shoppe
Colostrum 475 mg
Well dosed 1,425 mg/day A formulaBrand audit 69/100
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SuperSmart
Colostrum 1000 mg
Well dosed 1,000 mg/day A formulaBrand audit 63/100
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Designs for Health
Tegricel Colostrum
Well dosed 575 mg/day B formulaBrand audit 80/100
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Kirkman
Colostrum Gold Unflavored
Well dosed 5 Gram(s)/day A formulaBrand audit 57/100
Chosen for adequate Colostrum dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.
Sources
- 1. Immunological Outcomes of Bovine Colostrum Supplementation in Trained and Physically Active People: A Systematic Review and Meta-Analysis. (2020) ↑
- 2. Randomized control trials using a tablet formulation of hyperimmune bovine colostrum to prevent diarrhea caused by enterotoxigenic Escherichia coli in volunteers. (2011) ↑
- 3. Effects of bovine colostrum on recurrent respiratory tract infections and diarrhea in children. (2016) ↑
- 4. Bovine colostrum and product intervention associated with relief of childhood infectious diarrhea. (2019) ↑
- 5. Bovine colostrum supplementation during running training increases intestinal permeability. (2009) ↑
- 6. Intestinal fatty acid-binding protein and gut permeability responses to exercise. (2017) ↑
- 7. Oral Supplementation with Bovine Colostrum Decreases Intestinal Permeability and Stool Concentrations of Zonulin in Athletes. (2017) ↑
- 8. Pilot study of probiotic/colostrum supplementation on gut function in children with autism and gastrointestinal symptoms. (2019) ↑
- 9. Proline-rich polypeptides (Colostrinin®/COLOCO®) modulate BDNF concentration in blood affecting cognitive function in adults: A double-blind randomized placebo-controlled study. (2023) ↑
- 10. Does Colostrum Bovinum Supplementation Affect Swimming Performance in Endurance-Trained Males? A Randomized Placebo-Controlled Crossover Study. (2024) ↑
Generated August 14, 2026
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