Leuprolide Acetate Microspheres for Injection can treat prostate cancer. The pharmacologic effect of Leuprolide Acetate Microspheres for Injection is feedback inhibition of the function of the pituitary-gonadal system, inhibition of the ovarian and testicular response to gonadotropins, and reduction of estradiol and testosterone production. Since prostate cancer is associated with excess testosterone, this drug inhibits testosterone production by the testes, which results in the treatment of prostate cancer. Leuprolide Acetate Microspheres for Injection inhibits the production of estrogen by the ovaries, thus treating premenopausal breast cancer. Adverse reactions to Leuprolide Acetate Microspheres for Injection include edema, chest pressure, fever, chills, numbness of the lips or limbs, weight gain, abnormal sensations, deafness, tinnitus, elevated total cholesterol, triglycerides, or uric acid, hyperkalemia, and elevated blood sugar. The drug needs to be used under the supervision of a physician and operated by a healthcare professional to avoid adverse effects.