How long does birth control take to work
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How Long Does Birth Control Take to Work?
Understanding the effectiveness and the time it takes for different birth control methods to start working is crucial for making informed decisions about contraception. This article synthesizes research findings on the onset of effectiveness for various birth control methods.
Birth Control Implant: Immediate Effectiveness
Hormonal Release and Mechanism
The birth control implant, such as Nexplanon (etonogestrel implant), is a small, flexible device inserted into a woman's inner, upper arm by a healthcare provider. It releases hormones that prevent ovulation and block sperm from reaching the egg, making it a highly effective form of contraception .
Time to Effectiveness
The implant is effective almost immediately if inserted during the first five days of the menstrual cycle. If inserted at any other time, it may take up to seven days to become effective, during which an additional form of contraception should be used .
General Guidelines for Starting Birth Control
Immediate vs. Delayed Effectiveness
For most hormonal birth control methods, the timing of when you start using them can affect how quickly they become effective. Starting a method like the birth control pill, patch, or ring on the first day of your period generally provides immediate protection. However, if started at any other time, it may take up to seven days to become effective, necessitating the use of backup contraception during this period .
Post-Medication Considerations
For those who have taken medications like mifepristone or methotrexate for medical reasons, it is advised to start birth control before resuming sexual activity. This ensures that contraception is effective by the time sexual activity is resumed, typically after one week .
Conclusion
The time it takes for birth control to become effective varies depending on the method and timing of initiation. The birth control implant is effective almost immediately if inserted during the first five days of the menstrual cycle, while other hormonal methods may require up to seven days to become fully effective. Always consult with a healthcare provider to understand the specific guidelines for your chosen method of contraception.
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