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How Soon Does A Birth Control Pill Show Its Effectiveness?

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Posted on Mon, 3 Nov 2014
Question: My girl friend was on the same combination birth control pill for about 5 years and switched brands but didnt start taking the new one until after she finished her cycle of the old one. She started her period on a friday and started the new birth control on sunday. I was wondering how long it would take for the new pills to start being effective at preventing pregnancy
doctor
Answered by Dr. Dr. Rakhi Tayal (2 hours later)
Brief Answer:
She is protected in this cycle.

Detailed Answer:
Hello,
Thanks for trusting us with your health concern.
Since she was taking the birth control pills in the previous cycle also and now also she started taking the pill from day 3 she is protected against pregnancy in this cycle also. Changing the brands dos not reduce the efficacy of the pills. No need to worry.
Please feel free to discuss further. I will be glad to answer the follow up queries that you have.
Wishing you good health.
Regards.
Dr. Rakhi Tayal.
For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Rakhi-Tayal
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Dr. Rakhi Tayal (15 minutes later)
Thank you for your time. So she was protected from pregnancy when she started the new brand?
doctor
Answered by Dr. Dr. Rakhi Tayal (15 minutes later)
Brief Answer:
Yes.

Detailed Answer:
Yes she is protected now. No need to worry.
Regards.
Note: Revert back with your gynae reports to get a clear medical analysis by our expert Gynecologic Oncologist. Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
Dr.
Dr. Dr. Rakhi Tayal

OBGYN

Practicing since :2001

Answered : 14039 Questions

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How Soon Does A Birth Control Pill Show Its Effectiveness?

Brief Answer: She is protected in this cycle. Detailed Answer: Hello, Thanks for trusting us with your health concern. Since she was taking the birth control pills in the previous cycle also and now also she started taking the pill from day 3 she is protected against pregnancy in this cycle also. Changing the brands dos not reduce the efficacy of the pills. No need to worry. Please feel free to discuss further. I will be glad to answer the follow up queries that you have. Wishing you good health. Regards. Dr. Rakhi Tayal. For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Rakhi-Tayal