http://www.medications.com/effect/view/36997 My Husband has taken this all his life of course like many of us have as a child and teen. He is now 27 and started this on Tuesday for a sinus/upper resp. infection. Evening of day 1 with first dose and day 2 nothing. Day 3 he started itching and didn't k Sat, 06 Jun 2009 21:50:24 -0400 http://www.medications.com/effect/view/36997?item=20421 The same thing happened to me. I have taken Amoxicillin many times before without a problem. I am on it now for a sinus infection and after 8 days with no problem, I suddenly developed severe hives on my inner thighs, waist arms and back. I stopped taki http://www.medications.com/effect/view/36997?item=20421