How long does it take for Nexplanon to become effective?

## What is Nexplanon? 📋 Nexplanon is a small, flexible rod about the size of a matchstick that is inserted under the skin of your upper arm. It releases etonogestrel, a progestin hormone, into the bloodstream to prevent pregnancy through multiple mechanisms: - **Preventing ovulation**: Stops the ovaries from releasing eggs - **Thickening cervical mucus**: Makes it harder for sperm to enter the uterus - **Thinning the uterine lining**: Reduces the likelihood of implantation For detailed information, visit the [official Nexplanon website](https://www.nexplanon.com/). ## Effectiveness Timeline 📅 The time it takes for Nexplanon to become effective depends on when it's inserted during your menstrual cycle: ### If Inserted During Your Period - When inserted within the first 5 days of your menstrual period, Nexplanon is effective **immediately** - No backup contraception is needed ### If Inserted at Any Other Time - Takes **7 days** to become effective - Must use backup contraception (like condoms) during this period - Wait a full week before relying on Nexplanon alone ## Special Circumstances 🔍 ### Switching from Other Birth Control Methods * **Pills to Nexplanon**: No waiting period if inserted within 24 hours of last active pill * **Injectable contraception**: Insert during the time you would be due for next injection * **IUD removal**: Insert on the same day as IUD removal ### After Pregnancy > Important: Timing of insertion after pregnancy affects effectiveness and safety. * **Post-partum**: Can be inserted immediately after delivery if not breastfeeding * **Breastfeeding**: Safe to insert after 4 weeks postpartum * **Post-abortion**: Can be inserted immediately after procedure ## Effectiveness Rates 📊 Once active, Nexplanon is highly effective: | Time Period | Effectiveness Rate | |-------------|-------------------| | First year | >99.9% | | Three years | >99% | ## Factors Influencing Effectiveness Several factors can affect how well Nexplanon works: - **Incorrect Insertion**: Ensure a trained healthcare provider performs the insertion - **Medications**: Some medications, particularly anti-epileptics, can reduce effectiveness - **Body Weight**: May be slightly less effective in women with higher BMI - Most common antibiotics and daily activities don't affect effectiveness ## Common Side Effects After getting Nexplanon, you might experience: - Changes in menstrual bleeding patterns - Headaches - Weight gain - Breast tenderness - Mood changes - Acne These side effects often diminish over time. If they persist, consult your healthcare provider. --- For more information, visit the [Planned Parenthood guide on birth control implants](https://journals.upress.ufl.edu/rhm/article/view/1862). **Remember**: Always discuss your specific situation with a healthcare provider, as individual circumstances may vary.

How long does it take for Nexplanon to become effective?

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