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Have there been any reports of a woman gettin pregnant while on implanon?

Responses (1)

Marvell 21 Mar 2012

I'm sure some women have become pregnant while having the Implanon.

This is the data from the clinical trials ... and I'm sure there have been more pregnancies since the trial.

In clinical trials involving 923 subjects and 1854 women-years of Implanon use, the total exposure in 28-day cycles by year was
•Year 1: 10,867 cycles
•Year 2: 8595 cycles
•Year 3: 3492 cycles

The clinical trials excluded women who
•Weighed more than 130% of their ideal body weight
•Were chronically taking medications that induce liver enzymes

Among women aged 18 to 35 years of age at entry, 6 pregnancies during 20,648 cycles of use were reported. Two pregnancies occurred in each of Years 1, 2, and 3. Each conception was likely to have occurred shortly before or within 2 weeks after Implanon removal. With these 6 pregnancies, the cumulative Pearl Index was 0.38 pregnancies per 100 women-years of use.

The efficacy of Implanon does not depend on patient self-administration. Implanon may be less effective in women who are overweight or who are taking medications that induce liver enzymes (see CLINICAL PHARMACOLOGY, Special Populations, Overweight Women, and PRECAUTIONS, Drug Interactions sections).

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