Levonorgestrel

Levonorgestrel

Levonorgestrel (or l-norgestrel or -norgestrel) (Plan B, Next Choice, and others) is a second generation synthetic progestogen used as an active ingredient in some hormonal contraceptives, including combined oral contraceptive pills, progestogen only pills, emergency contraceptive pills, intrauterine systems, and contraceptive implants.

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