Ciprofloxacin should not be used with theophylline because-
it decreases efficiency of theophylline
it increases toxicity of theophylline
it decreases efficiency of ciprofloxacin
it decreases absorption of theophylline
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.