bacterial infection
"I took one 300 milligram dose  after a root canal and after 5 hours horrible burning and itching down my back buttocks and ears were unbearable.  I was standing at work when after an hour became light headed and had difficulty in walking. I had to stop every 5 steps to rest my heart was pounding I thought I was having a heart attack. I became nauseaous and extremely hot. I drank lots of water and sat down in front of the AC. I began to feel better. I came home and discovered blisters on my insides of both thighs and calf.  My right hand is red and swollen and my lips are chaff and swollen. My back has a painful rash on it this is my first day one single dose...Never again.."