<prompt> If a patient is allergic to penicillin and antibiotic prescription is an absolute need in endodontic treatment than which of the following antibiotic can be given:Clindamycin.Clavulanic acid.Doxycycline.Erythromycin.  <response>: For those patients who are allergic to penicillin or cephalosporin, the recommended antibiotic is clindamycin 600 mg per os, 1 hour before procedure. 