Joe Rogan confronted CNN’s Dr. Sanjay Gupta over the network’s portrayal of him taking ivermectin to treat COVID-19.

Rogan slammed CNN’s “lies” about ivermectin as a “horse dewormer” on his podcast Wednesday — Rogan previously took ivermectin pills prescribed by a doctor to help treat COVID-19 in late August. A CNN chyron at the time said, “Joe Rogan says he has Covid, taking livestock drug despite warnings.”

Ivermectin is widely prescribed to humans as an anti-parasitic treatment, though it is not an approved treatment for coronavirus and the Food and Drug Administration has warned against its use.

“Why would you say that when you’re talking about a drug that has been given out to billions and billions of people?” Rogan asked CNN’s chief medical correspondent. “A drug that the inventors won a Nobel Prize in 2015, a drug that has been shown to stop viral replication in vitro. You know that, right? Why would they lie and say that’s horse dewormer? [...] Do you think that that's a problem that your news network lies?"