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
All of the following are risk factors for increased lactic acidosis in patients on metformin therapy except
assistant
The correct answer is  Metformin can result in lactic acidosis and the risk factors includes old age,renal and liver insufficiency, alcoholics.
Smoking is not a risk factor.