Prógestíni

Prógestíni, also known as progestins, are synthetic or semi-synthetic derivatives of progesterone, a hormone naturally produced by the human body. They are commonly used in hormonal contraceptives, such as the progestin-only pill and combined oral contraceptives, to prevent pregnancy. Progestins work by thickening cervical mucus, thinning the uterine lining, and altering the composition of cervical mucus, making it difficult for sperm to reach the egg. They may also have additional effects on the endometrium, which can help prevent implantation of a fertilized egg.

Progestins are available in various forms, including oral pills, injectable preparations, and implants. They can be used alone or in combination with estrogen in hormonal contraceptives. Progestins are also used in the treatment of certain medical conditions, such as endometriosis, uterine fibroids, and menopausal symptoms. They are generally well-tolerated, but like any medication, they can have side effects, which may include nausea, breast tenderness, and irregular bleeding.

The most commonly used progestins include levonorgestrel, desogestrel, and norethindrone. These progestins have different pharmacological properties and are used in various formulations depending on the specific needs of the patient. It is important to note that the use of progestins should be under the guidance of a healthcare professional to ensure appropriate dosage and monitoring for potential side effects.