This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Pharmacology
Which of the following antimicrobials should not be given to a chronic asthmatic patient managed on theophylline therapy? 
Select and explain. 
A. Erythromycin, B. Cefotaxime, C. Cotrimoxazole, D. Amoxicillin
A: Erythromycin
Answer: A: Erythromycin 
Explanation: 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 Can't -Cimetidine Cause - Ciprofloxacin Enzyme -Erythromycin Inhibition - Isoniazid