Fluciclovine is a positron emission tomography (PET) imaging agent used in oncology for the detection and localization of recurrent prostate cancer. It is also known by the brand name Axumin. Fluciclovine works by targeting amino acid transport within prostate cancer cells, allowing for improved imaging of the tumor. This imaging agent has shown promise in accurately detecting recurrent prostate cancer, guiding treatment decisions, and monitoring response to therapy.