This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacokinetics, Subject name: Pharmacology
[{'content': 'Monitoring of drug level is not required with: \nSelect and explain. \nA. Lithium, B. L-Dopa, C. Digoxin, D. Phenytoin', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans: B (L-Dopa) Ref: Goodman &Gillman's The Pharmacological Basis of Therapeutics, 20I1 12th Edition, McGraw Hill Barton LL P 447, 803,592Explanation:Except L- dopa ah other drugs are having a narrow safety margin hence monitoring of these drugs are essentialDigoxin : 0.5-lng/mLPhenvtoin: Total- 10-20mcg/mL (free concentration of 0.75-1.25 mcg/Ml)Lithium : 0.6-1.5 mEq /L", 'role': 'assistant'}]