sinusitis
"I had a severe sinus infection. And although I needed an antibiotic to get rid of the infection, this is the worst antibiotic I have ever taken!  I was prescribed 20 tablets - 10 days, 2 a-day.  On about day 7, I started having horrible stomach pains both upper and lower, and felt absolutely nauseated, with little strength due to the nausea.  I had never seen a mixture of amoxicillin and potassium together. Something seems terribly wrong with this script. I was always good with just plain antibiotic "amoxicillin".  What's going on here? Drug companies trying to poison us? Because that is what it feels like.  I'm glad I'm done w/prescription and will know better nxt time.  BTW a friend went through the same thing. Coincidence? nahhh!"