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
Mirena is a :
assistant
The correct answer is  LNG-IUS or Mirena It is a levanorgestrel releasing device It contains about 52 mg of levonorgestrel released at a rate approximately 20 microgram per day THE TEXTBOOK OF GYNAECOLOGY; SHEILA BALAKRISHNAN; SECOND EDITION; PAGE NO 379.