This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Drug that does not interferes with antacid: March 2005 \nSelect and explain. \nA. Tetracyclin, B. Norfloxacin, C. Azithromycin, D. Ranitidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Azithromycin Drugs less absorbed when taking antacids include Tetracycline Antifungals Propranolol Captopril Ranitidine Famotidine Fexofenadine Quinolone-Nalidixic acid, Norfloxacin, Ciprofloxacin, Gatifloxacin Iron supplements. Antacids can also potentiate (make stronger) the following drugs Valproic acid Sulfonylureas Quinidine Levodopa Digoxin Phenytoin Carbamazepine Phenobarbitone Metronidazole Warfarin Imipramine Lidocaine', 'role': 'assistant'}]