The Effect of Colostrum Bovinum Supplementation in Endurance Athletes

Inclusion Criteria: * written consent to participate, * a good health condition without chronic health disorders, * a valid and up-to-date medical certificate confirming the athlete's ability to practice sports, * at least 5 years of triathlon/swimming training experience, * regular participation in triathlon/swimming competitions on at least national level. Exclusion Criteria: * allergy to cow's milk proteins, * lactose intolerance, * any autoimmune diseases, * reporting symptoms of infection or taking any medication (longer than 3 days) for 4 weeks before the enrollment to the study protocol.