I accidently took a double dose of augmentin (amoxicillin and clavulanate) this morning. i got a rash from it. should i hold off on taking it again tonight?

Allergic rash: A double dose of Augmentin (amoxicillin and clavulanate) isn't harmful if not repeated several times. The higher dose probably isn't the reason for the rash. Allergic drug reactions like rash have nothing to do with dose. Because of the rash (not because of the double dose) you should check with your doctor before taking more. If your doc isn't available over the weekend, probably someone is covering for her, so call today.