Background: To explore the effectiveness and safety of the gonadotropin-releasing hormone antagonist, Degarelix, for the treatment of advanced hormone-dependent prostate cancer (PCa) in a real-world setting. Methods: In this noninterventional study, patients with advanced hormone-dependent PCa were included. Primary endpoints were progression-free survival (PFS) failure defined as either prostate-specific antigen failure, additional therapy related to PCa, or death. Secondary endpoints included patient and physician satisfaction scores, urinary symptoms, and adverse events (AEs). Results: Of 274 patients with PCa, 271 received at least 1 dose of Degarelix. At a median follow-up of 12.2 (interquartile range 6.2-22.0) months, 148 patients (60.2%) had PFS failure. Thirty-five patients (13%) withdrew from the study due to AEs, 23 patients (8.4%) died, and 36 patients (13%) completed 3 years' follow-up. Urinary symptoms significantly decreased over time. In the safety population, 87.8% of patients reported AEs, with injection-site reactions commonly reported. The majority of physicians and patients considered the therapy satisfactory and well tolerated. Conclusions: In this observational study, Degarelix treatment was well accepted by men with advanced hormone-dependent PCa. Compared with phase III studies, a higher proportion of patients had PFS failure, possibly due to the inclusion of men with more advanced disease in the current study, and more men reported AEs.