Understanding What is the Failure Rate of Levonorgestrel
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3 min read
The effectiveness of levonorgestrel varies dramatically depending on its formulation, from an extremely low failure rate of just 0.1–0.2% for IUDs in the first year to a higher rate for emergency contraceptive pills if not taken promptly. Understanding **what is the failure rate of levonorgestrel** for each product is crucial for effective family planning and decision-making.