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Birth control pill - series

Progestin in pill



Normal female anatomy FSH and LH from pituitary gland Release of estrogen Release of LH Birth control pill Progestin in pill


The progesterone in birth control pills creates a thick cervical mucus making it difficult for sperm to reach the uterus. It also impedes an egg from attaching itself to the uterine lining (endometrium) because of changes in the cellular structure of the lining.


Review Date: 5/6/2007
Reviewed By: Rachel A. Lewis, MD, FAAP, Columbia University Pediatric Faculty Practice, New York, NY. Review provided by VeriMed Healthcare Network.
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