Joe Rogan came to the defense of CNN chief medical correspondent Dr. Sanjay Gupta after his appearance on Rogan’s podcast went viral for a conversation they had about his use of ivermectin after catching COVID-19.

The FDA stresses ivermectin is not approved for treating or preventing COVID-19, but Rogan says he was prescribed ivermectin from his doctor, which has a form developed for human use for some infections caused by parasites as well as a form for veterinary use. During a three-hour episode of his podcast, Rogan confronted Gupta over what he said was CNN misreporting his use of ivermectin as him taking “horse dewormer” to treat COVID-19.