Narrow therapeutic index is seen with:
Ans. B. LithiumDrugs with narrow therapeutic Index: digoxin, theophylline, lidocaine, cyclosporine, clonidine, anticonvulsant (Phenytoin), TCA (imipramine), aminoglycosides, glipizide (not metformin)
Desipramine
Lithium
Penicillin
Diazepam
Pharmacokinetics