Gestodene

Chemical structure of Gestodene

Gestodene is a synthetic progestogen used in hormonal contraception. It is a third-generation progestin, which is often combined with an estrogen such as ethinylestradiol in combined oral contraceptive pills.

Pharmacology

Gestodene is known for its high progestogenic activity and low androgenic activity, making it a preferred choice in contraceptive formulations. It works primarily by inhibiting ovulation and altering the endometrium to prevent implantation.

Mechanism of Action

Gestodene binds to the progesterone receptor in the body, mimicking the effects of natural progesterone. This leads to suppression of the luteinizing hormone (LH) surge, thereby preventing ovulation. Additionally, it increases the viscosity of cervical mucus, making it more difficult for sperm to penetrate.

Clinical Use

Gestodene is primarily used in contraception. It is available in various formulations, often in combination with ethinylestradiol. These combinations are used to prevent pregnancy and can also regulate menstrual cycles, reduce menstrual pain, and treat acne.

Side Effects

Common side effects of gestodene include nausea, headache, breast tenderness, and mood changes. As with other hormonal contraceptives, there is a small increased risk of venous thromboembolism (VTE).

3D model of Gestodene

Chemistry

Gestodene is a derivative of 19-nortestosterone and is structurally related to other progestins such as levonorgestrel. It is characterized by the presence of a 17α-ethynyl group, which is crucial for its progestogenic activity.

History

Gestodene was developed in the 1980s and introduced for medical use in the early 1990s. It was part of the development of third-generation progestins aimed at reducing the androgenic side effects associated with earlier progestins.

Related Pages

• Progestogen
• Combined oral contraceptive pill
• Ethinylestradiol
• Venous thromboembolism