Interstitial Cell Stimulating Hormone (ICSH) is a hormone that is commonly known as Luteinizing hormone (LH), which is mainly secreted by the pituitary gland in both men and women. Besides its role in the regulation of ovulation and the menstrual cycle in women, LH is also responsible for stimulating the production of testosterone in men. ICSH, or LH, is mainly responsible for maintaining healthy sexual function and promotes the production of mature sperm, and the growth and maintenance of the testes in men. Other common synonyms for ICSH include Gonadotropin, Luteotropin, and Interstitial Cell Stimulating Gonadotropin, amongst others.