You might have seen colostrum powder pop up on lists of trendy supplements or in protein smoothie recipes—but what is it? Colostrum comes from breast milk produced by mammals, like humans and cows. You’ll usually find it dried into a powder, which can be taken. in the form of a pill or blended into a drink.

Although scientific research is slim, the popularity of colostrum powder is growing, with claims that it supports a variety of wellness factors. Here are three of the most common claims about colostrum powder—you decide if it’s worth a try.

It may boost athletic performance

Some athletes are turning to colostrum powder as research suggests that it might improve athletic performance. Growth factors, the hormones that stimulate growth and muscle repair, are found in the proteins that make up colostrum powder. Also, taking a daily dose of this supplement was shown to help boost lean body mass, compared to whey protein in one study.

It may improve gut health issues

Early studies might be pointing to colostrum powder to help with gastrointestinal health and remedy digestive problems caused by non-steroidal anti-inflammatory drugs (NSAIDS), diarrhea, “leaky gut,” and more. Lactoferrin, a protein in colostrum powder with antimicrobial and antiviral properties, can help prevent diarrhea and infections caused by E. coli and other bacteria.

Celiac, type 1 diabetes, and other chronic illnesses can loosen the gut wall. With colostrum powder, the lactoferrin works closely with growth factors to strengthen the gut wall and help prevent bacteria and toxins from leaking into your bloodstream.

It could boost immunity

Colostrum powder is touted to be highly nutritious and packed with antibodies that fight bacteria and viruses. It’s high in vitamins A, B, C, and E, and lactoferrin. By adding this daily supplement to your routine, you might be helping your body prevent infections and boost your immune system.

Colostrum powder may offer a number of everyday health benefits, but might not be suitable for everyone. It may be best to skip this supplement if you are breastfeeding, vegan, or lactose intolerant (colostrum may contain lactose). Another thing: colostrum powder can have a pretty hefty price tag, with some supplements costing in the $50 – $100 range.

Talk to a nutritionist to see if colostrum powder might be right for you. Superbloom founder, Erin Berman, gave it a shot. Read her story here.