My son started taking a new batch of antibiotics for acne and within a few hours he started to feel really sick. Over a few days he felt worse and eventually spent 24 hours actually being sick (he had already stopped taking the tablets by then) nearly three weeks later he still has nearly constant indigestion and nausea. He is taking a proton pump inhibitor which has helped a little but hasn't stopped the nausea. Does anyone have any suggestions? He has hardly been out of the house for 3 weeks and travelling in the car makes him feel really sick.