This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Half Life of digoxin is \nSelect and explain. \nA. 24hrs, B. 40hrs, C. 48hrs, D. 60hrs', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref-KDT 7/e p55 Digoxin and digitoxin are the main digitalis products. Digoxin is absorbed quickly from the gastrointestinal tract with a bioavailability of between 75% and 95%. It is eliminated primarily through kidneys; therefore, it has a half-life of 36-48 hours in patients who have normal kidney function and 3.5-5 days in patients who are anuric. The reference range for digoxin is as follows: 0.8-2 ng/mL (1.2-2 nmol/L) Half-life: 36 hours Toxic level: more than 2 ng/mL', 'role': 'assistant'}]