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The most widely used form of oral emergency contraception is the progestin-only pill, which contains a 1.5 mg dosage of levonorgestrel. [36] Levonorgestrel-only emergency contraceptive pills are reported to have an 89% effectiveness rate if taken within the recommended 72 hours after sex. [38]
Levonorgestrel-IUDs may be more effective than progestogen-only pills and reducing associated bleeding (maintaining healthy hemoglobin levels), uterine volume, and pain, although both methods have shown a beneficial impact. That being said, there is currently no definitive treatment guideline, and management can be tailored based on the patient ...
Smoking while using combined birth control pills is not recommended. [1] It works by stopping ovulation , making the mucus at the opening to the cervix thick, and making the uterus not suitable for implantation .
1000 μg etynodiol diacetate (US: Demulen 1/50, Pfizer; Zovia 1/50, Watson) 500 μg norgestrel (US: Ogestrel, Watson) 250 μg levonorgestrel (US: Nordiol, Wyeth) 1.5 mg estradiol (as hemihydrate) 2.5 mg nomegestrol acetate: 24-day cycle + 4 placebo pills (AU, EU, RU: Zoely, MSD) 15 mg estetrol monohydrate (equivalent to 14.2 mg estetrol)
The risk of thromboembolism varies with different types of birth control pills; compared with combined oral contraceptives containing levonorgestrel (LNG), and with the same dose of estrogen and duration of use, the rate ratio of deep venous thrombosis for combined oral contraceptives with norethisterone is 0.98, with norgestimate 1.19, with ...
The Yuzpe regimen is a method of emergency contraception that uses a combination of ethinyl estradiol and levonorgestrel, specifically 1 mg of norgestrel (or 0.50mg of levonorgestrel) and 100 mcg of ethinyl estradiol ASAP and again in 12 hrs.
Levonorgestrel pills, when used within 3 days, decrease the chance of pregnancy after a single episode of unprotected sex or condom failure by 70% (resulting in a pregnancy rate of 2.2%). [11] Ulipristal, when used within 5 days, decreases the chance of pregnancy by about 85% (pregnancy rate 1.4%) and is more effective than levonorgestrel.
[125] [126] [127] Combined birth control pills containing different progestins result in SHBG levels that are increased 1.5- to 2-fold with levonorgestrel, 2.5- to 4-fold with desogestrel and gestodene, 3.5- to 4-fold with drospirenone and dienogest, and 4- to 5-fold with cyproterone acetate. [125]