Drostanolone is primarily used in the field of medicine and bodybuilding. In medicine, it has been utilized as an adjunct in the treatment of breast cancer, particularly in postmenopausal women. It works by inhibiting the effects of estrogen, which can help in slowing the growth of certain types of breast tumors. In the realm of bodybuilding and athletics, drostanolone is valued for its ability to promote muscle hardness and density without causing significant water retention. This makes it a popular choice among athletes and bodybuilders who are looking to achieve a more defined and lean physique, especially during cutting cycles when the goal is to reduce body fat while maintaining muscle mass. It is important to note that the use of drostanolone, especially in non-medical contexts, can be associated with various side effects and legal restrictions, depending on the country and the specific regulations governing the use of anabolic steroids.