The term "radioactive drugs" refers to medications that contain radioactive materials. These substances emit radiation, which can be used for both diagnostic and therapeutic purposes. In medicine, they are often used in nuclear medicine imaging techniques such as positron emission tomography (PET) scans or radiotherapy treatments for cancer patients. The radiation emitted by these drugs allows doctors to track the progress of a treatment or visualize the function of specific organs within the body. However, they also come with potential risks and side effects that must be carefully managed.