<prompt> Which of the following antimicrobials should not be given to a chronic asthmatic patient managed on theophylline therapy?ErythromycinCefotaximeCotrimoxazoleAmoxicillin  <response>: Drugs which inhibit theophylline metabolism and increase its plasma level are -erythromycin, ciprofloxacin, cimetidine, oral contraceptives, allopurinol etc. Enzyme Inducers G - Griseofulvin P - Phenytoin R - Rifampicin S - Smoking Cell - Carbamazepine Phone - Phenobarbitone Enzyme Inhibitors Vit -Valproate K - Ketoconazole Cant -Cimetidine Cause - Ciprofloxacin Enzyme -Erythromycin Inhibition - Isoniazid 