Hello, can i take augmentin (amoxicillin and clavulanate) if i already took a complete dose in about a month and a half ago ? will it be effective?

Likely correct: Usually we do not repeat the same antibiotic if already received by a patient just a few weeks ago since there is a good likelihood that either the initial treatment did not eradicate but only suppress the bacterial growth or that any new infection would likely be resistant to that antibiotic. YOu need to talk to your doctor about your concern.