Saturday, 11 a.m., a café with a marble counter and a queue out the door. Your friend taps a scoop of pale yellow powder into her oat-milk latte. "Honestly," she says, "it's liquid gold for your gut." The milk frother screams through whatever you were about to say.

The powder is bovine colostrum, the thick first milk a cow makes in the days after calving. It has wandered out of the sports aisle and into the morning coffee of women who have never run a marathon. By the time the frother stops, your friend has four claims about bovine colostrum benefits on the table. You have the length of a latte to answer them.

Colostrum has real human evidence, but nearly all of it comes from men on strong painkillers and athletes pushed to their limits. Almost none comes from a healthy woman with a bloated afternoon. For that reason Viva doesn't stock it, and the problem your friend is trying to fix has cheaper, better-studied answers.

Two friends at a café counter, one adding bovine colostrum powder to her latte while the other looks sceptical

The short answer: Bovine colostrum benefits are real in narrow groups and unproven for most women. Human trials found gut protection in men taking strong painkillers and mixed immune results in athletes, while we found no trial testing it for skin or everyday bloating. For IBS-type bloating, Canada's gastroenterology guideline strongly recommends psyllium instead.

  • Raymond Playford's 2001 trial of seven healthy men on a strong painkiller: colostrum held gut permeability nearly flat as the comparison tripled
  • Health Canada has licensed colostrum since 2008; NOW Colostrum's licensed claim is support for healthy immune function
  • The Canadian Association of Gastroenterology's 2019 IBS guideline rates psyllium a strong recommendation and probiotics a conditional one
What she said Who it was tested on How sure are we
"It heals your gut" Men on high-dose painkillers, and athletes exercising in heat, where some trials found no benefit Emerging, and mixed
"It's basically an immune shot" Athletes and active adults in training Emerging
"My skin has never looked better" We found no trial Experiential
"Everyone should take it" Some licensed products rule out pregnancy and breastfeeding Check the label of any brand

"It's liquid gold for your gut": does bovine colostrum benefit gut health?

The best-known evidence comes from Raymond Playford, a British gastroenterologist, and it starts with a sugar drink. Volunteers swallow two sugars, and the ratio that turns up in their urine shows how leaky the gut wall has become.

Newborn calf beside its mother in a misty green pasture at dawn, when cows produce bovine colostrum

In 2001 his team gave seven healthy men a strong anti-inflammatory painkiller three times a day for five days. On a comparison drink, their gut permeability tripled. Colostrum kept it nearly flat. Seven men, and not one woman, carried the claim that now sits in your friend's latte.

Playford is refreshingly candid about the limits. "If you suffer from a milk allergy," he told NPR, "then you shouldn't do it." The same report noted that he is medical director of a company that makes colostrum products.

A gut under siege from painkillers and a gut that swells after a sandwich are having very different weeks, and only the first has been studied. You say so gently, over the foam.

"It's basically an immune shot": does colostrum boost immunity?

She has a point about what colostrum is for. A cow makes it dense with antibodies and growth factors to get a wobbly calf through its first days. The leap is assuming that antibodies drafted for a calf will patrol a grown woman's sinuses in February.

Swedish kalvdans, a baked colostrum pudding, on a stoneware plate with fresh berries on a farmhouse table

Researchers have tested that leap in people who train hard. A 2020 review pooled trials in athletes and active adults. It found little or no change in the antibodies and immune cells in their blood and saliva. An earlier review did find fewer days with cold-like symptoms, from trials so thinly reported that the reviewers could not vouch for them.

The immunity story rests on athletes, and even there the immune system itself barely noticed. Elyce Shapiro, a Chicago dietitian, summed it up for NPR: "I just don't think that we know enough yet."

"My skin has never looked better"

Her skin does look wonderful. So does everyone's under Edison bulbs.

We searched the research for a trial of oral colostrum for skin, or for everyday bloating in healthy women, and found none. The Canadian licences are modest too. Colostrum products have held Health Canada licences since 2008. A typical one, for NOW Colostrum, may claim to "support healthy immune function". Glow, bloating and gut lining appear nowhere.

The one area where colostrum has a spotless record is dessert. In Sweden it becomes kalvdans, "calf dance", a pudding baked slowly with a little sugar and named for its wobble. Slow Food lists it among the traditional foods at risk of disappearing, which makes it the only colostrum product with an endangered-species problem.

"Fine, so what would you take?"

By now the latte is lukewarm, the queue has doubled and someone's toddler is conducting the espresso machine. If her real complaint is bloating, cramps and an unpredictable gut, Canada's gut specialists have already done the reading. The Canadian Association of Gastroenterology's guideline on irritable bowel syndrome gives psyllium a strong recommendation. Psyllium, the unglamorous husk pharmacies have sold for generations, is the one with a Canadian guideline behind it.

Café table with a glass of water swirling with psyllium fibre beside a finished latte with a yellow foam ring
Nutripur psyllium fibre powder 454 g container

Nutripur Psyllium Fibre Powder (454 g), $24.49

Ultra-fine husk that stirs into a morning glass of water without the gritty sludge. Start with one scoop and a full glass, and build up slowly.

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The same guideline gives probiotics a cautious nod, which makes them a sensible second step if fibre alone leaves her uncomfortable.

Progressive Perfect Probiotic 30 Billion Women shelf-stable capsules

Progressive Perfect Probiotic 30 Billion Women (30 veg caps), $36.29

A shelf-stable capsule for gut health that lives in your handbag, not the fridge door. One a day, taken with the coffee you were going to have anyway.

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Perhaps she trains for half-marathons and the long runs upset her stomach. There is a dairy-free option made for that kind of strain.

CanPrev L-Glutamine vegan powder 450 g tub

CanPrev L-Glutamine (450 g), $40.69

A vegan amino acid for the recovery shake after a long, exhausting run, with no milk in sight. Treat it as an experiment you can afford.

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She drains the latte, and the yellow foam leaves a ring inside the cup. A habit built for the wrong problem costs twice: once at the till, and again in the months spent waiting for a change no trial ever promised.

This article is general information and does not replace advice from your doctor or pharmacist.

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Frequently asked questions

How much does colostrum cost?

In NPR's June 2026 report, nutrition scientist Rick Bloomer put the cost as high as US$1 to $2 per daily dose, or roughly US$30 to $60 a month before exchange and shipping. Scoop sizes vary widely, so compare brands by cost per gram.

Is colostrum the same as the whey in my protein powder?

Both come from cow's milk, but colostrum is collected in the first days after calving and is far richer in antibodies and growth factors. In Playford's 2001 painkiller study, the comparison drink was whey, and it did not stop the rise in gut permeability.

Does colostrum help with GLP-1 stomach side effects?

Possibly, but the evidence is a small pilot study, according to NPR. Researchers have proposed colostrum with egg powder for GLP-1 gut symptoms, and a patent application for that use names Playford as an inventor. We found no independent trial.

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