while it is best to keep augmentin refrigerated at all times to maintain efficacy i am uncertain as to whether or not the efficacy was compromised because it was left out of the refrigerator all night. it does not become dangerous to use after it has been left out of the refrigerator. but it may not work to cure your son's infection and could prolong his illness. to be on the safe side i would suggest getting a new prescription. without knowing anything else about your son's situation i would say that is the way to ensure he continues to get the most effective form of the medication.
the doctor prescribed augmentin es for my son’s ear infection & cough. it was left unrefrigerated at night. is it safe?