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Combined hormonal contraception (CHC), or combined birth control, is a form of hormonal contraception which combines both an estrogen and a progestogen in varying formulations. [ 1 ] [ 2 ] The different types available include the pill , the patch and the vaginal ring , which are all widely available, [ 3 ] and an injection , which is available ...
Norgestrel was first introduced, as a birth control pill in combination with ethinylestradiol, under the brand name Eugynon in Germany in 1966. [9] [10] It was subsequently marketed as a combined birth control pill with ethinylestradiol in the United States under the brand name Ovral in 1968, and was marketed in many other countries as well.
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.
Norethisterone and ethinylestradiol levels over 24 hours after a single oral dose of 10 mg NETA in postmenopausal women. [25] NETA metabolizes into ethinylestradiol at a rate of 0.20 to 0.33% across a dose range of 10 to 40 mg. [26] [27] Peak levels of ethinylestradiol with a 10, 20, or 40 mg dose of NETA were 58, 178, and 231 pg/mL, respectively.
Birth control can change the length of your period, or even stop it entirely. Here are the period cycle side effects of the pill, IUD, implant, and more.
The vaginal ring with ethinylestradiol and etonogestrel increases the risk of venous blood clots 6.5 times compared to non-users of hormonal birth control. [19] This is similar to the risk of blood clots with combination birth control pills, which range between 3 times to 14 times the risk. [28]
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 is the oral form of combined hormonal contraception .
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. [26] [27] [28]
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