生物活性 | |||
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描述 | Levonorgestrel is a synthetic progestogen used as an active ingredient in some hormonal contraceptives. Approximately 20% of levonorgestrel intrauterine system users experience amenorrhea during at least 1 90-day interval by the first year after insertion[3]. Furthermore, when two doses of levonorgestrel 0.75 mg are administered, the second dose can confidently be taken 12-24 hours after the first without compromising efficacy[4]. In addition, the prevalence of adverse events after a levonorgestrel 0.75 mg two-dose regimen and a levonorgestrel 1.5 mg single-dose regimen were not statistically different[5]. Low-dose ethinylestradiol/levonorgestrel 20 microg/100 microg is a combined oral contraceptive that prevents pregnancy primarily by inhibiting ovulation. Ethinylestradiol/levonorgestrel 20 microg/100 microg is well tolerated; adverse events were those commonly associated with combined oral contraceptives[6]. The LNG-IUS (levonorgestrel-releasing intrauterine system) can be used successfully throughout the reproductive period for effective contraception and treatment of menorrhagia[7]. |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT01286948 | Female Contraception | Phase 1 | Completed | - | Chile ... 展开 >> Instituto Chileno de Medicina Reproductiva José Victorino Lastarria 29, Santiago, Chile Dominican Republic Profamilia Socorro Sanchez No. 160, Santo Domingo, Dominican Republic, Apartado Postal 1053 收起 << |
NCT02545452 | Endometriosis | Phase 1 | Completed | - | Germany ... 展开 >> Berlin, Germany, 13353 收起 << |
NCT02616146 | Contraception | Phase 3 | Terminated | - | - |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.20mL 0.64mL 0.32mL |
16.00mL 3.20mL 1.60mL |
32.01mL 6.40mL 3.20mL |
参考文献 |
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