Side Effects, Health Benefits, and Health Risks
Side Effects (see Managing Any Problems)
Some users report the following:
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First several months to a year: |
After about one year: |
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- Users of Implanon and Implanon NXT are more likely to have infrequent bleeding, prolonged bleeding, or no monthly bleeding than irregular bleeding.
- Headaches
- Abdominal pain
- Acne (can improve or worsen)
- Weight change
- Breast tenderness
- Dizziness
- Mood changes
- Nausea
Other possible physical changes:
- Enlarged ovarian follicles
Complications
Uncommon:
- Infection at insertion site (most infections occur within the first 2 months after insertion)
- Difficult removal (rare if properly inserted and the provider is skilled at removal)
Rare:
- Expulsion of implant (expulsions most often occur within the first 4 months after insertion)
Extremely rare:
- There are a few reports of implants found in another place in the body due to improper insertion, for example, in a blood vessel.
† For definitions of bleeding patterns, see “vaginal bleeding.”