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Meant to be taken at the same time every day (some pills can be taken within 2–24 hours and still be effective) [19] Combined contraceptive patch [ 7 ] 120-150 μg of norelgestromin and 20-35 μg ethinyl estradiol daily [ 20 ] [ 21 ] [ 22 ]
Doses of component hormones also vary among products, and some pills are monophasic (delivering the same dose of hormones each day) while others are multiphasic (doses vary each day). combined oral contraceptive pills can also be divided into two groups, those with progestins that possess androgen activity (norethisterone acetate, etynodiol ...
Each package has 84 active pills and seven placebo pills to be taken at the end of the active cycle. [18] It was first developed by Barr Pharmaceuticals, in collaboration with Eastern Virginia Medical School, under an agreement. [25] The U.S. Food and Drug Administration (FDA) approved Seasonale in the United States on September 5, 2003. [26]
When the first birth control pill was being developed, the researchers were aware that they could use the contraceptive to space menstrual periods up to 90 days apart, but they settled on a 28-day cycle that would mimic a natural menstrual cycle and produce monthly periods. The intention behind this decision was the hope of the inventor, John ...
Oral contraceptives, abbreviated OCPs, also known as birth control pills, are medications taken by mouth for the purpose of birth control. The introduction of the birth control pill ("the Pill") in 1960 revolutionized the options for contraception, sparking vibrant discussion in the scientific and social science literature and in the media.
Dienogest is used primarily in birth control pills in combination with ethinylestradiol under the brand name Valette. [24] [7] [25] It is also available in a quadriphasic birth control pill combined with estradiol valerate, marketed as Natazia in the United States and Qlaira in some European countries and Russia.
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Levonorgestrel is a hormonal medication which is used in a number of birth control methods. [3] [7] It is combined with an estrogen to make combination birth control pills. [8]As an emergency birth control, sold under the brand names Plan B One-Step and Julie, among others, it is useful within 72 hours of unprotected sex.