bacterial infection
"Day 8 of taking this for just another sinus infection. Have had horrible, HORRIBLE side effects. My body felt extremely strange, tingly almost. Nausea has been so bad I had to take a pregnancy test to eliminate that possibility. I did vomit today for the first time in years after a whiff of cleaning products. The infection has improved but if you have a sensitive stomach - I don't advise. I did notice improvement (on nausea) on days I consistently chugged water (emphasis on chugged) and took the dose while eating."