<prompt> Administration of which of the following drug requires monitoring:LithiumHaloperidolDiazepamAcetazolamide  <response>: Ans. A: Lithium Therapeutic drug monitoring is the measurement of medication levels in blood. Its main focus is on drugs with a narrow therapeutic index, i.e. drugs that can easily be under- or overdosed. Examples of drugs analysed by therapeutic drug monitoring: Aminoglycoside antibiotics gentamicin Antiepileptics such as carbamazepine, phenytoin and valproic acid Mood stabilisers, especially lithium citrate Antipsychotics such as pimozide and clozapine Theophylline Digoxin Antiarrhythmics 