Which one of the following statement is not correct about once-a-week pill for females?

Options

A. It is Saheli oral contraceptive pills for females developed by scientists of CDRI , Lucknow .
B. It is newly discovered contraceptive pills to be taken orally having progesterone - estrogen hormone combination.
C. It is with very few side effects and having high contraceptive value.
D. It prevents Implantation by changing the nature. Of endometrium of uterus.

Answer

To solve the question regarding the once-a-week pill for females, also known as Saheli, we will analyze each of the provided statements to determine which one is incorrect.

### Step-by-Step Solution:

1. **Understanding Saheli**:
- Saheli is an oral contraceptive pill developed by the Central Drug Research Institute (CDRI) in Lucknow. It is known as a once-a-week pill.

**Hint**: Remember that Saheli is a specific type of contraceptive pill with unique characteristics.

2. **Analyzing Option A**:
- **Statement**: "Saheli oral contraceptive pills for female developed by scientists of Central Drug Research Institute that is CDRI Lucknow."
- This statement is correct as Saheli was indeed developed by CDRI.

**Hint**: Confirm the origin of Saheli by checking its development history.

3. **Analyzing Option B**:
- **Statement**: "It is widely it is newly discovered contraceptive pills to be taken orally having progesterone and estrogen home combination."
- This statement is incorrect because Saheli is a non-hormonal contraceptive and does not contain a combination of progesterone and estrogen.

**Hint**: Focus on the hormonal composition of Saheli to determine its classification.

4. **Analyzing Option C**:
- **Statement**: "It is with very few side effects and having high concentration of contraceptive value."
- This statement is correct. Saheli is known for having few side effects and a high contraceptive value.

**Hint**: Consider the safety profile and effectiveness of Saheli when evaluating this statement.

5. **Analyzing Option D**:
- **Statement**: "It prevents implantation by changing the nature of endometrium of uterus."
- This statement is correct. Saheli works by altering the endometrial lining, preventing implantation.

**Hint**: Understand the mechanism of action of Saheli to confirm this statement.

### Conclusion:
After evaluating all the options, the statement that is not correct about the once-a-week pill (Saheli) is **Option B**. Saheli does not contain a combination of progesterone and estrogen; instead, it is a non-hormonal contraceptive.

### Final Answer:
**Option B** is the incorrect statement regarding the once-a-week pill for females.