How long does the augmenting rash last ? and should the augmenting be stopped ?

Drug Rash: I assume you mean Augmentin (amoxicillin and clavulanate) which is a combination of Amoxicillin and clavulanic acid. If you are getting a rash from the Augmentin (amoxicillin and clavulanate) then the medication should be stopped immediately and the doctor who prescribed should be informed immediately. Rash should resolve shortly but a time course is impossible to provide.

Augmentin (amoxicillin and clavulanate) rash: The rash will last for two or three days after you stop taking the drug. If Augmentin is important for treatment it can be taken with benadryl (diphenhydramine).However, if respiratory symptoms develop, stop immediately and go to the e r for a shot of adrenalin.