Clarithromycin
"I found this medicine to be a mistake for me. I had severe inflammation of my upper eyelid, swollen, red, and very uncomfortable, so the Dr. prescribed this hoping it would solve the problem. First day I took it, within two to three hours, I was immediately running for the bathroom. It made me very ill regardless of what I ate, I took an antacid, probiotics, ate carefully, ate more than usual when I took it, drank only water, etc. It gave me the worst stomach cramps I have ever had, made me so nauseous I had to call out of work, and I stayed put on my bed writhing in pain."