Chlormadinone caproate

Chlormadinone_caproate.svg

Chlormadinone caproate is a synthetic progestin and a derivative of chlormadinone. It is used in hormonal contraception and hormone replacement therapy.

Chemical Structure and Properties

Chlormadinone caproate is a steroidal progestin, specifically a derivative of 17α-hydroxyprogesterone. It is the caproate ester of chlormadinone, which means it is chlormadinone with a caproate (hexanoate) group attached to it. This modification enhances its pharmacokinetics, allowing for a longer duration of action when administered.

Pharmacology

Chlormadinone caproate acts as an agonist of the progesterone receptor. It has similar effects to natural progesterone, including the regulation of the menstrual cycle, maintenance of pregnancy, and inhibition of ovulation. It also has antiandrogenic properties, which means it can block the effects of androgens.

Medical Uses

Chlormadinone caproate is primarily used in hormonal contraception and hormone replacement therapy. In contraception, it is often combined with an estrogen to prevent ovulation and regulate the menstrual cycle. In hormone replacement therapy, it is used to alleviate symptoms of menopause and to prevent endometrial hyperplasia in women taking estrogen.

Side Effects

Common side effects of chlormadinone caproate include nausea, breast tenderness, headache, and mood changes. Serious side effects can include thromboembolism, stroke, and liver dysfunction. Due to its antiandrogenic properties, it may also cause a decrease in libido and erectile dysfunction in men.

History

Chlormadinone caproate was developed in the mid-20th century as part of the search for effective hormonal contraceptives. It has been used in various formulations and combinations for both contraception and hormone replacement therapy.

See Also

• Progestin
• Hormonal contraception
• Hormone replacement therapy
• Chlormadinone
• Progesterone receptor