Surprising

Colostrum at 25 g/day pushed ventilatory threshold in endurance athletes — but didn't change their exhaustion time, body fat, or lactate

This small crossover trial suggests bovine colostrum might shift a marker of aerobic efficiency, but the finding is preliminary and confined to trained males — and comes from a study where several other performance and body metrics flatlined, which puts the practical benefit in perspective.

Endurance-trained males who took 25 grams of colostrum daily for 12 weeks reached their ventilatory threshold (the point where breathing noticeably quickens during exercise) later in a standard cycling test. That improvement in timing did not, however, translate into longer total endurance, any change in body composition, or lower blood lactate, meaning the practical edge for athletes remains uncertain. Because this is one of the first controlled trials to test colostrum against placebo for aerobic capacity, the result needs replication before it can be taken as a reliable aid.

Where this fits in the evidence

This is among the first studies we've indexed on Colostrum for Increased Time to Ventilatory Threshold — treat it as an early signal until more research accumulates.

The study

Twelve-Week Colostrum Bovinum Supplementation Supports Aerobic Capacity but has No Effect on Body Composition in Endurance-Trained Males: A Randomized Placebo-Controlled Crossover Study.

Randomized Controlled Trial (RCT)
2025-04-20
European journal of sport science

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