system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which drug is not used in Alzheimer's disease
assistant
The correct answer is  Refer kDT 6/e p 102,472,473 Because of hepatotoxicity, and requirement of frequent dosing, Tekken is less often used than other agents