Levonorgestrel API

Name	Levonorgestrel
Chinese name	左炔诺孕酮
Cas Number	797-63-7
Source	India
Qualifications	USDMF/-/-/-/-

Levonorgestrel is a quick-acting, short-term oral contraceptive. The contraceptive mechanism is to significantly inhibit ovulation and prevent the implantation of pregnant eggs, and increase the consistency of cervical mucus and increase the resistance to sperm penetration, thereby exerting a quick-acting contraceptive effect. Levonorgestrel is the optically active part of racemic norethindrone. Its activity is twice as strong as that of norethindrone. The dosage can be reduced by half, and adverse reactions will be reduced accordingly. The trial used progesterone and levonorgestrel intrauterine sustained-release system to treat patients with endometrial hyperplasia, and the results confirmed that the use of levonorgestrel intrauterine sustained-release system treatment can more effectively reduce their adverse reactions It can improve the menstruation and endometrial thickness, the curative effect is more significant, and the clinical application value is higher. The latest research points out that the treatment of hysteroscopic resection combined with levonorgestrel intrauterine contraceptive system for patients with uterine fibroids can effectively reduce menstrual flow, reduce uterine volume, and reduce disease recurrence rate. Security. Data show that in 2019, the sales of levonorgestrel at retail pharmacies in cities in China exceeded 1.1 billion yuan.

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