This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Plasma drug monitoring is done for 
Select and explain. 
A. Drug with high safety margin, B. Drug with low safety margin, C. Drug with high therapeutic index, D. None
B: Drug with low safety margin
Answer: B: Drug with low safety margin 
Explanation: The difference between the usual effective dose and the dose that causes severe or life-threatening side effects is called the margin of safety.Ref: Essentials of Medical Pharmacology KD TRIPATHI 7th edition Page no: 55