In theophylline metabolism, drug interactions Occur with all Except:
Phenobarbitone, rifampin enhance theophylline metabolism Cimetidine inhibits theophylline metabolism ESSENTIALS OF MEDICAL PHARMACOLOGY 7TH EDITION KD TRIPATHI Page No:226,227
Cimetidine
Phenobarbitone
Rifamipine
Tetracyclines
Respiratory system