I started taking Onfi before it was approved by the FDA in the U.S. I bought it "For personal use only". It was sent to my Doctors Office, where I picked it up. I was being treated for Breast Cancer, but the Chemo and Radiation Therapy was not working. It was one of my meds. So I was tapered off and added the Onfi. It was sent by mail.

I took Dilantin for a while. Blood work showed that my ammonia levels were three times normal. High ammonia levels can affect your liver. The doctor stopped the Dilantin, and I went back on phenobarbital.

Thank you for your answer

I have taken Onfi short term as a rescue med but I haven't switched to it and used it FT.

I have switched from Dilantin . But it wasn’t to Onfi.