Article 1 India 1 adolescent 1 adult 1 aged 1 carbamazepine 1 child 1 clopidogrel 1 cross-sectional study 1 cyanocobalamin 1 dexamethasone 1 digoxin 1 drug interaction 1 drug interactions 1 drug usage duloxetine 1 esomeprazole 1 female 1 ferrous fumarate 1 fluconazole 1 human 1 intensive care unit 1 levothyroxine 1 major clinical study 1 male 1 methotrexate 1 middle aged 1 observational study 1 omeprazole 1 pantoprazole 1