NCIt related terms : birth control pill; oral contraceptive pill;
NCIt definition : Orally administered synthetic sex hormones with contraceptive activity. The oral contraceptive
preparation contains a combination of an estrogen, such as ethinyl estradiol, and
a progestagen, such as levonorgestrel or norethidrone. The oral contraceptive prevents
pregnancy by preventing ovulation and by inducing endometrial and cervical changes
undesirable for fertilization and implantation.;
Alternative definition : NCI-GLOSS: A pill used to prevent pregnancy. It contains hormones that block the release
of eggs from the ovaries. Most birth control pills include estrogen and progestin.;
Codes from synonyms : CDR0000443306; CDR0000479004;