Colostrum: how useful is this supplement for immunity and digestion?

Article updated on 6 September 2026.

Bovine colostrum is the first milk produced by a cow after calving. Its unique composition explains why it has attracted the interest of researchers. However, it cannot, on its own, guarantee a ‘repaired’ gut or a boosted immune system for anyone who consumes it.

Why its composition attracts attention

Colostrum contains, in particular, proteins and compounds that have been studied for their interactions with the gut and the immune system. However, once ingested, an ingredient passes through the digestive system: its effect in adults cannot be deduced solely from its initial biological role.

Products also differ in terms of their processing, concentration and serving size. A study on a specific product does not automatically validate all powders bearing the same word on their packaging.

Digestion: interesting but mixed results

A systematic review published in 2024 brought together 22 clinical trials, involving a variety of populations and symptoms. The results regarding digestive disorders were mixed, and the authors concluded that better-designed studies were needed. This does not support a universal recommendation for bloating or abdominal pain. Source: review on colostrum and digestive disorders.

The term ‘intestinal permeability’ is often used in marketing. A biological measure altered in an experimental protocol does not equate to the cure of a digestive syndrome. It is important to assess whether symptoms, quality of life or other outcomes relevant to the patient actually improve.

Immunity: specify the desired benefit

Studies have investigated respiratory symptoms in physically active adults. The available evidence suggests a possible benefit in certain contexts, but the number of studies remains limited and their methods vary. These results do not support the claim that colostrum offers general protection against infections. Source: review of trials on respiratory symptoms during exercise.

‘Supports immunity’ is too broad a phrase to guide a choice. The useful question is more specific: for which group of people, to alleviate which problem, with which product and for how long?

Is this relevant to your situation?

Allergies, tolerance and product quality

Bovine colostrum is derived from milk. If you have a milk protein allergy, you must avoid it and discuss this with your healthcare team. Lactose intolerance is a different condition; tolerance depends, in particular, on the product’s composition. The term ‘natural’ provides no information on any of these issues.

Choose a traceable supply chain, a recognised manufacturer and a processing method that meets food safety standards. Do not consume raw colostrum without proper guidance. If you are pregnant, breastfeeding, have a chronic illness or are giving this to a child, seek advice before considering this supplement.

Compare the cost with the actual expected benefit

Dividing the price of the pack by the number of portions is more useful than comparing two boxes of different sizes. Then check whether the portion provides the required amount of the product in question; however, this does not constitute a prescription. If the intended benefit remains vague, the expenditure is likely to be so too.

A A general review of the uses of colostrum rightly highlights the inconsistency of the data. For a simple routine, start by the variety of fibre sources and Daily recovery.

Original illustration generated by AI.