I am sorry to here that the Trihexyphenidyl isn't doing but much to help you. With interactions between meds do you think that the neurologist just didn't check or that she believes the benefits out weigh the risks, I want to take the medication if there is a chance of making me feel better, but not if there are crazy risks involved. I am going to call her today.... Interesting note about the med being approved for women and not men, I never knew that. Thank you again