Ervin McCarthy wrote: "Does anyone have any knowledge of amentadine including side affects?" Ervin - I gave Amantadine a try for a couple of months recently. At first I thought I saw a slight improvement in my tremor (my only symptom). One side effect, however, forced me to quit. The constipation caused by the drug was more than I could handle. When I quit Amantadine my tremor remained the same, so it evidently wasn't helping the symptom anyway. I set the drug aside. Then, this past week-end, I ate something that didn't set well and developed diarrea. We were out of Imodium and I thought, "What am I going to do?" Ah ha! The Amantadine. Sure enough. Stopped the diarrea immediately. I'll keep it around for that reason. Others have had much more success than I had with Amantadine, and I do think it is a fine drug. The researchers don't understand how it works for sure, but they suspect that it is probably neuroprotective (another reason I wanted to take it). Hopefully, some of the others will share their successful experience with Amantadine. Joan (56/8)