Nexplanon and Low Libido
Yes, Nexplanon (etonogestrel implant) can cause low libido, though the incidence varies across studies, and if this side effect significantly impacts quality of life, removal of the implant should be strongly considered as symptoms typically resolve within one week.
Evidence for Low Libido as a Side Effect
The FDA drug label for Nexplanon does not list decreased libido as a common adverse reaction in the main safety tables 1. However, clinical research demonstrates this is a real phenomenon:
- A cohort study of 238 women using levonorgestrel implants (similar progestin-only mechanism) found an 18.82% cumulative incidence of low libido after 12 months, with 60% of cases occurring within the first 6 months 2
- A case report documented secondary anorgasmia developing 1 month after Nexplanon insertion in a previously sexually functional woman, which resolved within 1 week of implant removal 3
- In one proof-of-concept study, decreased libido was cited as a reason for implant removal by at least one participant 4
Conversely, some studies show neutral or positive effects:
- A study of 25 women with endometriosis showed improved sexual function (including desire domain) at 6 and 12 months 5
- An Italian study found no negative effects on libido in healthy women, though temporary reductions in vitality and mental health occurred in the first 3 months 6
Management Algorithm
1. Confirm the Temporal Relationship
- Document when low libido began relative to implant insertion
- Rule out other causes: new medications (especially SSRIs, antihypertensives), relationship issues, depression, thyroid dysfunction, or other medical conditions
- The FDA label notes that depression and emotional lability led to discontinuation in 1-2.3% of users 1, which can secondarily affect libido
2. Assess Impact on Quality of Life
- If low libido is significantly affecting the patient's relationships or well-being, removal is the most definitive solution
- Etonogestrel levels drop below detectable limits within one week of removal 1
- Sexual function recovery typically occurs within 1 week of removal 3
3. Consider Watchful Waiting (First 3-6 Months Only)
- Some sexual function changes may be temporary, improving after 6 months 6
- This approach is only reasonable if the patient can tolerate the symptoms and the impact on quality of life is minimal
4. Do Not Attempt Pharmacologic Interventions
- The case report specifically noted that off-label bupropion and sildenafil failed to restore sexual function while the implant remained in place 3
- These medications are not effective solutions for progestin-induced sexual dysfunction
5. Provide Alternative Contraception
- If removal is chosen, have a backup contraceptive plan ready
- Ovulation can return as early as 7-14 days after removal 1
- Consider non-hormonal options (copper IUD) or combined hormonal methods if the patient suspects progestin-only formulations are the issue
Key Clinical Pitfalls
Do not dismiss the complaint. While not listed prominently in FDA labeling, research evidence confirms this is a real adverse effect with an incidence approaching 19% in some populations 2. The discrepancy between FDA labeling and research findings likely reflects underreporting in initial clinical trials.
Do not delay removal if quality of life is impaired. Unlike bleeding irregularities (which often improve with time), sexual dysfunction appears to persist and requires removal for resolution 3.
Counsel patients preemptively. Given the 18.82% incidence rate, patients should be informed of this possibility before insertion, particularly those for whom sexual function is a priority 2.