DD recently ahd a very bad cold which went on and on. GP prescribed amoxycillin, and 4 hours later dd came out in a virulent red rash over her entire body. The paedeatrician diagnosed a possible allergy to penicillin, but I was too stresed by a constantly screaming daughter and an arsehole of a husband who was helpfully at the Chelsea game to ask exactly what that meant, apart from obviously not giving her penicillin any more. Has anybody else got any experience of this? What is different about the ethrymicene based antibiotics? Surely if they were as good as penicillin they would be given to start off with anyway?