Melatonin has been explored as an adjunct therapy in cancer treatment. Clinical trials have indicated that melatonin, when used alongside conventional therapies such as chemotherapy and radiation, can improve treatment outcomes. It may enhance the efficacy of these treatments while reducing their side effects, such as fatigue and chemotherapy-induced toxicity. Additionally, melatonin has shown promise in improving the quality of life for cancer patients by aiding sleep and reducing anxiety and depression.