Therapeutic drug monitoring is required in all except:
Ans. (B) Metformin(Ref: KDT 8th/e p42)* We can easily monitor blood glucose levels as an effect of metformin, thus TDM is not required.* TDM is required for lithium, digitalis, phenytoin, immunosuppressants and anti-arrhythmics, etc.
Phenytoin
Metformin
Tacrolimus
Cyclosporine
General Pharmacology