This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraception, Subject name: Gynaecology & Obstetrics
Mirena is a : 
Select and explain. 
A. Used in aboions, B. Anti progesterone, C. Progesterone IUCD, D. Hormonal implant
C: Progesterone IUCD
Answer: C: Progesterone IUCD 
Explanation: 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.