Hormone therapy is a type of drug therapy indicated for different diseases. It is used, for example, in treatment of breast cancer or menopausal. Hormone therapy is a treatment used in cancer patients, especially in breast cancer and prostate cancer, and during menopause. This method aims to prevent stimulus generated hormone on growth of tumor cells, by blocking receptor or reducing hormone production. The main methods of treatment are hormonal ablative hormonotherapy, consisting surgical or radiotherapy gonads approach to reducing levels of circulating hormones, and pharmacological hormonterapia. The latter based on drug delivery to prevent the growth of tumor cells.