I developed a tingling problem after 2 1/2 years of taking plavix. The neurologist prescribed doxepin, and one dose aggravated the tingling and left me with diarrhea and light headed for three plus days. I almost fainted twice. Now, he has prescribed the muscle relaxant, tizanidine. It has many of the negative side effects as doxepin. If it's like the metaxalone I took several years ago prior to a hip replacement, i'm truly hesitant to try it. Your advice would be greatly appreciated,