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Updated: Aug 18, 2026

05:44
Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
Published on: March 1, 2019
A pre-coital pill? A preliminary in vitro study
G T Kovacs1, J Hendricks, D Summerbell
1Monash Medical School, Box Hill Hospital, Victoria, Australia.
Abstract:
The use of the progestogen-only pill as a 'pre-coital contraceptive' was tested by in vitro studies of sperm-mucus interaction. The results suggest that a single tablet of levonorgestrel 30 microg, or norethisterone 350 microg, was effective in preventing sperm migration in the cervical mucus about 12 hours later. This suggests that the progestogen-only pill may be effective as a 'morning before pill'.
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