Relieving tension headaches. It may also be used for other conditions as determined by your doctor. How these medicines work is not completely understood. Acetaminophen works in the brain to relieve pain. Butalbital has a depressant effect that reduces anxiety and causes relaxation.
Phrenilin Forte is a combination drug that is used to treat tension headaches. Note that Phrenilin Forte is not used to treat headaches that come and go. Also, your doctor may prescribe Phrenilin Forte for other uses not listed in this medication guide on the approved drug label.