Bovine Colostrum for Increased Intestinal Permeability (Leaky Gut)
B Good Evidence At least one randomized trial supports this, with mostly consistent results.May help reduce exercise-induced and NSAID-induced increases in intestinal permeability. Colostrum (20-60 g/day) truncated permeability increase by ~80% in athletes.
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B
The Bottom Line
May help reduce exercise-induced and NSAID-induced increases in intestinal permeability. Colostrum (20-60 g/day) truncated permeability increase by ~80% in athletes.
Key Study Findings
Controlled Clinical Trial
n=18
4 weeks
The effect of adding colostrum or sodium butyrate to the diet on the intestinal barrier …
Dose: None
vs: control (no additive)
Outcome: intestinal barrier function and growth performance
Effect: None
p<0.001
Population: weaned DanBred Hybrid piglets aged 28 days
Review
Clinical Applications of Bovine Colostrum in GastrointestinaI Disorders: Mechanisms, Evidence, and Therapeutic Potential.
Dose: None
vs: None
Outcome: None
Effect: None
None
Population: None
Randomized Controlled Trial
n=65
10 weeks
Evaluation of bovine colostrum replacer supplementation to improve weaning transition in Holstein dairy calves.
Dose: Bovine colostrum replacer during weaning
vs: No colostrum supplementation
Outcome: Intestinal permeability and weight gain
Effect: None
None
Population: Holstein dairy calves during weaning
Meta-Analysis
Bovine Colostrum in Increased Intestinal Permeability in Healthy Athletes and Patients: A Meta-Analysis of Randomized …
Dose: None
vs: Control
Outcome: Inflammatory markers
Effect: MD: -0.01
None
Population: None
In Vitro
Understanding the Immunomodulatory Effects of Bovine Colostrum: Insights into IL-6/IL-10 Axis-Mediated Inflammatory Control.
Dose: None
vs: None
Outcome: Cytokine production (IL-6/IL-10 axis)
Effect: None
p < 0.05
Population: In vitro (Caco-2/THP-1 co-culture model)
In Vitro
n=13
5.0 weeks
Intestine Health and Barrier Function in Fattening Rabbits Fed Bovine Colostrum.
Dose: 2.5%
vs: control
Outcome: inflammation markers
Effect: None
p < 0.001
Population: Bovine
Key Statistics
4
Studies
300
Participants
↑
Positive
B
Grade
Referenced Papers
PloS one
2026
International journal of …
2025
Digestive diseases and …
2024
4 citations
Journal of dairy …
2024
1 citations
Veterinary sciences
2023
9 citations
Veterinary sciences
2023
7 citations
A Systematic Review of the Influence of Bovine Colostrum Supplementation on Leaky Gut Syndrome in Athletes: Diagnostic Biomarkers and Future …
Systematic Review
Nutrients
2022
11 citations
Biomedicines
2022
7 citations
Nutrients
2021
26 citations
Medicine
2021
2 citations
Frontiers in immunology
2020
24 citations
Medicina (Kaunas, Lithuania)
2020
18 citations
European journal of …
2019
42 citations
Nutrition (Burbank, Los …
2019
37 citations
European journal of …
2017
93 citations
Nutrients
2017
49 citations
The American journal …
2016
75 citations
American journal of …
2016
15 citations
American journal of …
2015
85 citations
Journal of animal …
2014
15 citations
American journal of …
2011
161 citations
Nutrients
2009
30 citations
Journal of medicinal …
2009
25 citations
Clinical nutrition (Edinburgh, …
2005
43 citations
Asia Pacific journal …
2005
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Commonly Used Dosages
- general:
- 10-20 g/day
- travelersdiarrhea:
- Hyperimmune colostrum: 400-3,600 mg/day (anti-ETEC formulation)
- exercisegutprotection:
- 20 g/day starting 14 days before intense exercise
- intestinalpermeability:
- 20-60 g/day for gut barrier support
Upper limit: No established upper limit; most studies use 10-60 g/day
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| None | 4 weeks | Positive | 18 |
| None | -- | Mixed | -- |
| Bovine colostrum replacer during weaning | 10 weeks | Positive | 65 |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
| 2.5% | 5.0 weeks | Mixed | 13 |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
Best taken: On an empty stomach (30 minutes before meals) for gut barrier support
Safety & Side Effects
Reported Side Effects
- ⚠ Mild GI discomfort (bloating, nausea) during initial use
- ⚠ Not suitable for individuals with cow's milk protein allergy
- ⚠ Lactose content may affect lactose-intolerant individuals
- ⚠ Potential concern about growth factor (IGF-1) content in cancer survivors (theoretical)
Known Interactions
- ● Immunosuppressants (colostrum immunoglobulins may theoretically interfere; clinical significance unclear)
- ● No significant adverse drug interactions established
Tolerable upper intake: No established upper limit; most studies use 10-60 g/day
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does Bovine Colostrum help with Increased Intestinal Permeability (Leaky Gut)?
Based on 4 studies with 300 participants, there is moderate evidence from clinical studies that Bovine Colostrum may support Increased Intestinal Permeability (Leaky Gut) management. Our evidence grade is B (Good Evidence).
How much Bovine Colostrum should I take for Increased Intestinal Permeability (Leaky Gut)?
Studies have used various dosages. A commonly studied range is 10-20 g/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Bovine Colostrum?
Reported side effects may include Mild GI discomfort (bloating, nausea) during initial use, Not suitable for individuals with cow's milk protein allergy, Lactose content may affect lactose-intolerant individuals, Potential concern about growth factor (IGF-1) content in cancer survivors (theoretical). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Bovine Colostrum and Increased Intestinal Permeability (Leaky Gut)?
We rate the evidence as Grade B (Good Evidence). This rating is based on 4 peer-reviewed studies with 300 total participants. The overall direction of effect is positive.
Related Evidence
Other ingredients for Increased Intestinal Permeability (Leaky Gut)
Bovine Colostrum for other conditions
References
- [1] Marek Pieszka et al.. PLoS One. 2026. The effect of adding colostrum or sodium butyrate to the diet on the intestinal barrier of weaned piglets. doi:10.1371/journal.pone.0342570 PubMed
- [2] Yusuf Serhat Karakülah et al.. Int J Mol Sci. 2025. Clinical Applications of Bovine Colostrum in GastrointestinaI Disorders: Mechanisms, Evidence, and Therapeutic Potential. doi:10.3390/ijms262110673 PubMed
- [3] Parisa Hajihashemi et al.. Dig Dis Sci. 2024. Bovine Colostrum in Increased Intestinal Permeability in Healthy Athletes and Patients: A Meta-Analysis of Randomized Clinical Trials. doi:10.1007/s10620-023-08219-2 PubMed
- [4] Kristen Y Edwards et al.. J Dairy Sci. 2024. Evaluation of bovine colostrum replacer supplementation to improve weaning transition in Holstein dairy calves. doi:10.3168/jds.2023-24498 PubMed
- [5] Ramunė Grigalevičiūtė et al.. Vet Sci. 2023. Understanding the Immunomodulatory Effects of Bovine Colostrum: Insights into IL-6/IL-10 Axis-Mediated Inflammatory Control. doi:10.3390/vetsci10080519 PubMed
- [6] Lucia Aidos et al.. Vet Sci. 2023. Intestine Health and Barrier Function in Fattening Rabbits Fed Bovine Colostrum. doi:10.3390/vetsci10110657 PubMed
- [7] Hanna Dziewiecka et al.. Nutrients. 2022. A Systematic Review of the Influence of Bovine Colostrum Supplementation on Leaky Gut Syndrome in Athletes: Diagnostic Biomarkers and Future … doi:10.3390/nu14122512 PubMed
- [8] Birna Asbjornsdottir et al.. Biomedicines. 2022. Prophylactic Effect of Bovine Colostrum on Intestinal Microbiota and Behavior in Wild-Type and Zonulin Transgenic Mice. doi:10.3390/biomedicines11010091 PubMed
- [9] Monica Guberti et al.. Nutrients. 2021. Bovine Colostrum Applications in Sick and Healthy People: A Systematic Review. doi:10.3390/nu13072194 PubMed
- [10] Minji Cho et al.. Medicine (Baltimore). 2021. Efficacy of complementary medicine for nonsteroidal anti-inflammatory drug-induced small intestinal injuries: A narrative review. doi:10.1097/MD.0000000000028005 PubMed
- [11] Ole Bæk et al.. Front Immunol. 2020. Diet Modulates the High Sensitivity to Systemic Infection in Newborn Preterm Pigs. doi:10.3389/fimmu.2020.01019 PubMed
- [12] Maciej Hałasa et al.. Medicina (Kaunas). 2020. Post-Delivery Milking Delay Influence on the Effect of Oral Supplementation with Bovine Colostrum as Measured with Intestinal Permeability Test. doi:10.3390/medicina56100495 PubMed
- [13] Daniel S March et al.. Eur J Nutr. 2019. The effect of bovine colostrum supplementation on intestinal injury and circulating intestinal bacterial DNA following exercise in the heat. doi:10.1007/s00394-018-1670-9 PubMed
- [14] Ghazaleh Eslamian et al.. Nutrition. 2019. Effects of early enteral bovine colostrum supplementation on intestinal permeability in critically ill patients: A randomized, double-blind, placebo-controlled study. doi:10.1016/j.nut.2018.10.013 PubMed
- [15] Daniel S March et al.. Eur J Appl Physiol. 2017. Intestinal fatty acid-binding protein and gut permeability responses to exercise. doi:10.1007/s00421-017-3582-4 PubMed
- [16] Maciej Hałasa et al.. Nutrients. 2017. Oral Supplementation with Bovine Colostrum Decreases Intestinal Permeability and Stool Concentrations of Zonulin in Athletes. doi:10.3390/nu9040370 PubMed
- [17] Glen Davison et al.. Am J Clin Nutr. 2016. Zinc carnosine works with bovine colostrum in truncating heavy exercise-induced increase in gut permeability in healthy volunteers. doi:10.3945/ajcn.116.134403 PubMed
- [18] Rene L Shen et al.. Am J Physiol Gastrointest Liver Physiol. 2016. Milk diets influence doxorubicin-induced intestinal toxicity in piglets. doi:10.1152/ajpgi.00373.2015 PubMed
- [19] René L Shen et al.. Am J Physiol Gastrointest Liver Physiol. 2015. Early gradual feeding with bovine colostrum improves gut function and NEC resistance relative to infant formula in preterm pigs. doi:10.1152/ajpgi.00163.2015 PubMed
- [20] M De Vos et al.. J Anim Sci. 2014. Supplementing formula-fed piglets with a low molecular weight fraction of bovine colostrum whey results in an improved intestinal barrier. doi:10.2527/jas.2013-6437 PubMed
- [21] Tania Marchbank et al.. Am J Physiol Gastrointest Liver Physiol. 2011. The nutriceutical bovine colostrum truncates the increase in gut permeability caused by heavy exercise in athletes. doi:10.1152/ajpgi.00281.2010 PubMed
- [22] Jonathan D Buckley et al.. Nutrients. 2009. Bovine colostrum supplementation during running training increases intestinal permeability. doi:10.3390/nu1020224 PubMed
- [23] Han Sung Choi et al.. J Med Food. 2009. Bovine colostrum prevents bacterial translocation in an intestinal ischemia/reperfusion-injured rat model. doi:10.1089/jmf.2007.0613 PubMed
- [24] Jeong Wook Kim et al.. Clin Nutr. 2005. Combined effects of bovine colostrum and glutamine in diclofenac-induced bacterial translocation in rat. doi:10.1016/j.clnu.2005.04.004 PubMed
- [25] Jeong Wook Kim et al.. Asia Pac J Clin Nutr. 2005. Protective effects of bovine colostrum on non-steroidal anti-inflammatory drug induced intestinal damage in rats. PubMed
- [26] R J Playford et al.. Clin Sci (Lond). 2001. Co-administration of the health food supplement, bovine colostrum, reduces the acute non-steroidal anti-inflammatory drug-induced increase in intestinal permeability. PubMed
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.