The injections for prostate cancer are usually leuprolide, goserelin and degarelix. 1. Leuprolide and Goserelin are Gonadotropin-releasing hormone (GnRH) analogues, which are mainly indicated for limited-stage, locally progressive, biochemical recurrence and distant metastatic prostate cancer. Its side effects include transient elevation of testosterone, which needs to be supplemented with anti-androgenic drugs to prevent “tumor scintillation”, in addition to weight gain, fatigue, and decreased libido. 2. Degarelix is a gonadotropin-releasing hormone (GnRH) antagonist, indicated for metastatic prostate cancer, with side effects such as allergy, pain in the injection area, weight gain and increased liver enzymes. Endocrine therapy drugs for prostate cancer include injections and oral drugs, and there are various treatment options, which need to be timely medical treatment and follow the doctor’s instructions.