How Effective?

One of the most effective and long-lasting methods:

• Less than 1 pregnancy per 100 women using implants over the first year (5 per 10,000 women). This means that 9,995 of every 10,000 women using implants will not become pregnant.
• A small risk of pregnancy remains beyond the first year of use and continues as long as the woman is using implants.
  • Over 5 years of Jadelle use: About 1 pregnancy per 100 women
  • Over 3 years of Implanon use: Less than 1 pregnancy per 100 women (1 per 1,000 women)
  • Over 7 years of Norplant use: About 2 pregnancies per 100 women
• Jadelle and Norplant implants start to lose effectiveness sooner for heavier women:
  • For women weighing 80 kg or more, Jadelle and Norplant become less effective after 4 years of use.
  • For women weighing 70–79 kg, Norplant becomes less effective after 5 years of use.
  • These users may want to replace their implants sooner (see Question 9).

Return of fertility after implants are removed: No delay

Protection against sexually transmitted infections (STIs): None

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