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www.drugs.com/drug-class/contraceptives.html

Oral hormonal contraceptives: Progestin-only contraceptives. Progestin-only contraceptives (POPs) contain just one hormone, progestin. Most work by thickening cervical mucus, preventing sperm from entering the uterus.

en.wikipedia.org/wiki/Combined_oral_contraceptive_pill

The combined oral contraceptive pill (COCP), often referred to as the birth control pill or colloquially as "the pill", is a type of birth control that is designed to be taken orally by women. It includes a combination of an estrogen (usually ethinylestradiol) and a progestogen (specifically a progestin).When taken correctly, it alters the menstrual cycle to eliminate ovulation and preve...

www.cancer.gov/.../causes-prevention/risk/hormones/oral-contraceptives-fact-sheet

Oral contraceptives (birth control pills) are hormone-containing medications that are taken by mouth to prevent pregnancy. They prevent pregnancy by inhibiting ovulation and also by preventing sperm from penetrating through the cervix.. By far the most commonly prescribed type of oral contraceptive in the United States contains synthetic versions of the natural female hormones estrogen and ...

www.webmd.com/sex/birth-control/birth-control-pill

How Does Hormonal Contraception Work? A woman becomes pregnant when an egg released from her ovary (the organ that holds her eggs) is fertilized by a man's sperm. The fertilized egg attaches to ...

medlineplus.gov/druginfo/meds/a601050.html

Oral contraceptives (birth-control pills) are used to prevent pregnancy. Estrogen and progestin are two female sex hormones. Combinations of estrogen and progestin work by preventing ovulation (the release of eggs from the ovaries).

www.mayoclinic.org/drugs-supplements/estrogen-and-progestin-oral...

Description and Brand Names. Drug information provided by: IBM Micromedex Descriptions. Oral contraceptives are known also as the Pill, OCs, BCs, BC tablets, or birth control pills.

www.cdc.gov/reproductivehealth/contraception

Combined oral contraceptives—Also called “the pill,” combined oral contraceptives contain the hormones estrogen and progestin.It is prescribed by a doctor. A pill is taken at the same time each day. If you are older than 35 years and smoke, have a history of blood clots or breast cancer, your doctor may advise you not to take the pill.

www.aafp.org/afp/2010/1215/p1499.html

Adverse effects of hormonal contraceptives usually diminish with continued use of the same method. Often, physi- cians only need to reassure patients that these symptoms will likely resolve within ...

www.medicinenet.com/oral_contraceptives/article.htm

Consumer information about the medication ORAL CONTRACEPTIVES , includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug ORAL CONTRACEPTIVES.

medical-dictionary.thefreedictionary.com/Oral+Contraceptives

Oral Contraceptives Definition Oral contraceptives are medicines taken by mouth to help prevent pregnancy. They are also known as the Pill, OCs, or birth control pills. Purpose Oral contraceptives, also known as birth control pills, contain artificially made forms of two hormones produced naturally in the body. These hormones, estrogen and progestin ...