Ciprofloxacin should not be used with theophylline because-
High-Yield Explanation
Ans. is 'b' i.e., It increases the toxicity of theophylline Impoant interactions of FOs o Plasma concentration of theophylline, caffine and warfarin are increased by ciprofloxacin, norfloxacin and pefloxacin. o NSAIDSs enhance CNS toxicity of FQS. o Antacids, sucralfate and iron salts reduce absorption of FQs.