Hi Don! Thanks for choosing healthcaremagic.com.The uses of Androfil Gel (Androgel, Generic Testosterone) include: This medication is used in men who do not make enough of a natural substance called testosterone. In males, testosterone is responsible for many normal functions, including growth and development of the genitals, muscles, and bones. It also helps cause normal sexual development (puberty) in boys. testosterone is similar to the natural testosterone produced by your body. It belongs to a class of drugs known as androgens. It works by affecting many body systems so that the body can develop and function normally. Testosterone may also be used in certain adolescent boys to cause puberty in those with delayed puberty.In HIv due to HIV itself or due to other infections there is hypogonadism(dysfunction of sex organs) hence the use of androfil.