bacterial infection
"Prescribed 100mg 2x day for 14 days for a skin infection. It is so important that you drink lots of water & do not lie down within 30min of taking this medicine to prevent ulcers in the esophagus. I followed this and had no issues whatsoever. On 7th day I had slight nausea, take with food. Also I wanted to mention I did experience chest tightness/shortness of breath for days 3-12. It stopped 24 hours after my last dose...Prilosec helped. 

Recommend taking a probiotic once a day to prevent any stomach issues including diarrhea. Works great for me."