Desogestrel-only Pill (Cerazette)

162 Journal of Family Planning and Reproductive Health Care 2003: 29(3) Background Inevitably there are limited long-term safety data for any new contraceptive method. Detailed scientific studies, performed in a small number of women, provide evidence on mode of action. Larger clinical trials examine efficacy, side effects and acceptability. The number of women-years of exposure is less than for established methods and all available evidence should be considered before prescribing new products. Many existing products have, however, been licensed for many years and may have not have been the subject of recent evidence-based assessments. In the paragraphs that follow, answers are provided to a number of key questions about desogestrel-only pills.