Nexplanon Duration of Use
Nexplanon is FDA-approved for 3 years of use and should be removed or replaced at that time. 1, 2
Standard FDA-Approved Duration
- The etonogestrel implant (Nexplanon) provides contraceptive protection for 3 years from insertion. 1
- After 3 years, the device must be replaced with a new implant if continued contraceptive protection is desired, per FDA approval. 1, 2
- The implant demonstrates exceptional effectiveness with a failure rate of less than 0.05% during the 3-year approved duration, making it one of the most effective reversible contraceptive methods available. 1
Evidence for Extended Use Beyond 3 Years
While the FDA-approved duration is 3 years, emerging research suggests potential effectiveness beyond this timeframe:
- Research demonstrates no documented pregnancies during the fourth year of use in prospective studies, with calculated failure rates of 0 per 100 woman-years (95% CI: 0-1.48) at 4 years. 3
- A large multicenter randomized trial showed 100% efficacy through years 4 and 5, with no pregnancies occurring during extended follow-up of over 200 women using the implant for at least 5 years. 4
- Serum etonogestrel levels remain above the ovulation threshold of 90 pg/mL through 5 years of use across all body mass index categories (median 153.0 pg/mL at end of year 5). 3
Important Clinical Caveat
Despite research evidence supporting extended use, this is NOT currently recommended for standard clinical practice. 1 The FDA approval remains at 3 years, and clinicians should counsel patients accordingly. Extended use beyond 3 years should only be considered in exceptional circumstances where removal is not immediately feasible, and patients should be informed this represents off-label use.
Key Clinical Considerations
- Backup contraception (condoms or abstinence) is required for at least the first 7 days after insertion for full contraceptive efficacy. 1
- The implant maintains high continuation rates (84% at 1 year) despite common irregular bleeding patterns. 1
- For patients taking hepatic enzyme-inducing medications (efavirenz, nevirapine, or most protease inhibitors), contraceptive efficacy may be reduced throughout the entire duration of use, requiring alternative or additional contraceptive methods. 1