A recent study found that vaginal rings and even skin patches had used the same combination of hormones that pose similar ...

Low levels of progesterone and estrogen cause the hypothalamus to send a releasing hormone (GnRH) to the pituitary gland. The releasing hormone signals the pituitary gland to release FSH (follicle ...

Oral progestins with or without an estrogen component have been described as being effective in the treatment of endometriosis. A number of different substances have been tried; derivatives of ...