Amitriptyline
"My Neuro prescribed Amitryptyline for anxiety, he said. Because he felt that anxiety was a contributing factor to my cluster headaches that never seem to stop. I have tremendous thirst with it. The only thing that seems to fix the thirst is 7up. So I drink a bottle or 2 a day. Too much sugar and now I get diarrhea---the worst kind---up to 5 or 6 times a day. But I noticed my headaches weren't appearing....until the weather changed and rain came. I have been down all day. Not in excruciating pain tho like usual. Cut my pills in half and the thirst issue is better. Less 7up. Still diarrhea though (today was 3x). Been on it (Ami) for 7 weeks. 3 doctors I have consulted have said diarrhea is not really a side effect of this med."