Nomegestrol

Nomegestrol.svg

Nomegestrol is a progestin medication used primarily in hormonal contraception and hormone replacement therapy. It is a synthetic progestogen that mimics the effects of the natural hormone progesterone.

Pharmacology

Nomegestrol is known for its high selectivity for the progesterone receptor and minimal interaction with other steroid receptors, which reduces the risk of side effects. It has strong antigonadotropic effects, which help in suppressing ovulation and regulating the menstrual cycle.

Medical Uses

Nomegestrol is used in various formulations, including:

• Oral contraceptive pills
• Hormone replacement therapy for menopausal symptoms
• Treatment of endometriosis
• Management of dysmenorrhea and other menstrual disorders

Mechanism of Action

Nomegestrol works by binding to the progesterone receptor in the body, which leads to changes in the endometrium and suppression of ovulation. It also has a stabilizing effect on the uterine lining, which helps in reducing menstrual bleeding.

Side Effects

Common side effects of nomegestrol may include:

• Nausea
• Headache
• Breast tenderness
• Mood changes
• Weight gain

Contraindications

Nomegestrol should not be used in individuals with:

• Known or suspected breast cancer
• Active liver disease
• History of thromboembolic disorders
• Undiagnosed vaginal bleeding

Interactions

Nomegestrol can interact with other medications, including:

• Antibiotics
• Anticonvulsants
• Antiretrovirals

These interactions can affect the efficacy of nomegestrol and may require dosage adjustments.

History

Nomegestrol was developed in the late 20th century and has been used in various countries for its contraceptive and therapeutic benefits. It is often combined with estradiol in contraceptive pills to provide both estrogenic and progestogenic effects.

See Also

• Progestin
• Hormonal contraception
• Hormone replacement therapy
• Endometriosis
• Dysmenorrhea