Herb & supplement monograph

Bovine Colostrum Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Bovine Colostrum interacts with medications. The heart of this page is the interaction list — every drug Bovine Colostrum is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Bovine Colostrum is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Reviewed by licensed pharmacists Sourced from Natural Medicines

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Interaction report

Drugs that interact with Bovine Colostrum

0 medications have a known interaction with Bovine Colostrum, graded by severity. Select any drug for the full evidence-based detail.

We don’t currently list any known drug interactions for Bovine Colostrum. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Bovine Colostrum combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Monograph

Bovine Colostrum: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Bovine colostrum is the nutrient-rich first milk from cows, packed with antibodies, growth factors, and protein. Early research suggests it may help with gut health, certain types of diarrhea, and immune support, but more high-quality studies are needed. It is generally well tolerated, but people with milk allergy should avoid it, and pregnant or breastfeeding women should check with a healthcare provider first.

Part used: Colostrum (the first milk produced by cows after calving)
Common forms: Powder, capsules, chewable tablets, liquid

People commonly use it for

Immune support
Gut health and digestion
Exercise recovery
Diarrhea (including infectious diarrhea)
Anti-inflammatory support

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Generally well tolerated in most adults, but those with milk or dairy allergy should avoid it.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Bovine colostrum is the special milk that cows produce in the first few days after giving birth, before regular milk comes in. This early milk is thicker and richer than normal milk and is naturally full of antibodies, proteins, growth factors, vitamins, and minerals that help newborn calves get a healthy start.

For supplements, the colostrum is collected from cows, then dried into a powder and put into capsules, tablets, or loose powder. Some products are made from "hyperimmune" colostrum, which comes from cows that were vaccinated against certain germs so their milk contains higher levels of specific antibodies.

People take bovine colostrum hoping to support their immune system, improve gut health, recover faster from exercise, and reduce inflammation. It has become popular among athletes and people interested in digestive wellness.

How it works

Bovine colostrum contains a mix of compounds that may explain its proposed effects. The main ones include immunoglobulins (antibodies), which can bind to germs in the gut, and lactoferrin, a protein that may help fight bacteria and support immune function.

It also contains growth factors (such as IGF-1) that may help repair and maintain the lining of the intestines, along with proteins, healthy fats, vitamins, and minerals that provide general nourishment.

Because the antibodies in colostrum work mostly inside the digestive tract rather than being absorbed into the bloodstream, much of its action is thought to happen locally in the gut. It is worth noting that many of these mechanisms come from laboratory and animal studies, and how strongly they apply to people taking supplements is still being studied.

Effectiveness

Does Bovine Colostrum work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 36 uses evaluated

3 Possibly effective 3 Leans ineffective 30 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Effective Exercise-induced respiratory infections