This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacodynamics, Subject name: Pharmacology
[{'content': 'Administration of which of the following drug requires therapeutic drug monitoring? \nSelect and explain. \nA. Lithium, B. Haloperidol, C. Diazepam, D. Acetazolamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Therapeutic drug monitoring is adjustment of dose of the drug according to its plasma concentration. It is required for A Aminoglycosides (e.g. gentamicin) Drug Digitalis Possessing Phenytoin (anti-epileptics) Low Lithium Therapeutic Tricyclic antidepressants Index Immunomodulators (e.g. cyclosporine) Range of 0.8-1.2 mEq/L is ored for treatment of acute manic or hypomanic patients. 0.6-1.0 mEq/l is considered adequate and safer for long term prophylaxis.', 'role': 'assistant'}]