Which of the following is incorrectly matched?

Options

A. Non-medicated IUDs - Lippes loop
B. Copper releasing IUD - LNG-20
C. Hormone releasing IUD- Progestasert
D. Saheli - Once a week contraceptive pill

Answer

To determine which of the following options is incorrectly matched, we will analyze each option provided in the question:

1. **Saheli - Once a week contraceptive pill**:
- Saheli is indeed an oral contraceptive pill developed at the Central Drug Research Institute in Lucknow. It contains a non-steroidal formulation called centchromane and is taken once a week after an initial three-month dose of twice a week intake. This option is correctly matched.

2. **Non-medicated IUDs - Lipids Loop**:
- Non-medicated IUDs, such as the Lipids Loop, are made from materials like plastic and stainless steel. The Lipids Loop is primarily made of plastic and is impregnated with barium sulfate. This option is also correctly matched.

3. **Copper releasing IUD - LNG 20**:
- LNG 20 refers to a hormone-releasing IUD that releases levonorgestrel (LNG), which is a synthetic progestin. This is not a copper-releasing IUD; instead, copper-releasing IUDs, such as the Copper T, do not contain hormones. This option is incorrectly matched.

4. **Hormone releasing IUD - Progesterone**:
- Hormone-releasing IUDs do release progesterone or its derivatives, such as levonorgestrel. This option is correctly matched.

Based on this analysis, the incorrectly matched option is the third one: **Copper releasing IUD - LNG 20**.

### Final Answer:
The incorrectly matched option is: **Copper releasing IUD - LNG 20**.