Gi disturbances symptoms and conditions

I have been taking Topomax for migraines for about 3 years now. Staying at the 75mg at night dosage. Going to 100mg just does not work for me. GI disturbances too severe. Diarrhea mostly. Early on same as a lot of the other reports, tingling in hands, bad tasting soda, some hair loss, and intermittent upset stomach and diarrhea. Memory not as good as without the med and balance a little off. All of these have diminished in intensity and frequency. Up side, weekly headaches that forced me to go to bed gone. Being an irritable wretch because my head hurt, was about to begin to hurt, or just got over hurting gone. At this point in my life the pros still outweigh the cons and as long as that is true I will continue with the regimine.

I have been on Levoxyl for only 12 days after switching from generic Levothyroxine, which I was on for 3 years.. I have no history of any GI disturbances and the last 5 days I have been extremely constipated, had horrible stomach cramps, gas and bloating. I am on no other meds, so my Doc and I have concluded maybe Lexovyl is not the right med for me?. Am starting name brand Synthroid tomorrow. In addition to the GI disturbances I have been having headaches the past week as well.