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
When the same dose of a drug is repeated at half life intervals, the steady-state(plateau)plasma drug concentration is reached after
assistant
The correct answer is  Steady state concentration of a drug is achieved after 4-5 half-lives Ref: KDT 6/e pg 30.