Azithromycin
"I took a chlamydia test thinking nothing of it, but I can't swallow tablets therefore have to have it in liquid form. I had my first dose at around 3:50 and second dose at around 7:50. Within those 4 hours I began to feel sick and I don't get ill often. Just over about an hour later I began to throw up and have diarrhoea, I also couldn't stop shaking for a while afterwards."