Ionsys contains fentanyl, a narcotic (opioid) pain medicine. Ionsys is used only in a hospital to treat acute pain after surgery. Ionsys may be used for other purposes not listed in this medication guide.
Ionsys is a drug that contains narcotic as the active ingredient known to relieve pain. Among other places, Ionsys is used in hospitals where it is administered into patients to relieve unwanted pain. It acts as a painkiller on cases where the patient is suffering from severe pain.