This research note provides an explorative analysis of sport-related knowledge exchange about Complementary and Alternative Medicine (CAM) on the Internet. Data are taken from a qualitative content analysis of the largest German-speaking Internet sport portal. Knowledge exchange about CAM in these Internet fora is characterized by the following phenomena: Users expected CAM to improve their performance and discussed a great variety of treatments based on primarily anecdotal knowledge. In addition, two main types of users (helpers and help-seekers) dominated the exchanges. The main reasons for seeking alternative medical help on the Internet were cases of prolonged illness and dissatisfaction with biomedical care.