Drugs which contain mixture of norethindrone and ethynylestradiol are

Options

A. Antibiotics
B. Antifertility
C. Antiseptic
D. Antacid

Answer

To solve the question regarding the drugs that contain a mixture of norethindrone and ethynylestradiol, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- Norethindrone is a synthetic progestin, which mimics the action of the natural hormone progesterone.
- Ethynylestradiol is a synthetic form of estrogen, which is similar to the natural hormone estrogen.

2. **Understand Their Functions**:
- Norethindrone primarily helps in regulating the menstrual cycle and maintaining pregnancy by controlling the levels of progesterone.
- Ethynylestradiol is used to regulate the menstrual cycle and is involved in the development of female secondary sexual characteristics.

3. **Determine the Application**:
- Both norethindrone and ethynylestradiol are commonly used in combination in contraceptive pills. They work together to prevent ovulation, thereby controlling fertility.

4. **Analyze the Options**:
- The options given are:
- A) Antibiotics
- B) Antifertility
- C) Antiseptic
- D) Antacid
- Since norethindrone and ethynylestradiol are used to prevent pregnancy, they fall under the category of antifertility drugs.

5. **Select the Correct Answer**:
- Based on the analysis, the correct answer is **B) Antifertility**.

### Final Answer:
The drugs which contain a mixture of norethindrone and ethynylestradiol are **B) Antifertility**.