Cancer patients often want to use dietary supplements alongside their conventional cancer treatments to manage side effects, boost immunity, and feel more in control of their health. Many patients don’t tell their doctors about supplement use because they worry about judgment or think doctors won’t understand their interests. This paper suggests doctors should have open, non-judgmental conversations with patients about supplements, evaluate their safety and effectiveness using reliable information sources, and work together with patients to make informed decisions that keep them safe while respecting their choices.