As we have discussed in Temporary Methods of Birth Control - Chemical Methods & IUDs -
- Types of IUDs
- Hormone-Releasing IUDs:
- Progestasert - It is a T shaped IUD made of ethylene and vinyl acetate copolymer containing titanium dioxide. It contains a reservoir of progesterone together with barium sulfate dispersed in silicone fluid.
- LNG - 20 (Mirena) - This T shape & device has a collar attached to a vertical arm containing levonorgestrel dispersed in poly dimethyl siloxane.
Hence, the correct option is (a).
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