Naratriptan is primarily used in the treatment of migraine headaches. It works by narrowing the blood vessels around the brain and reducing substances in the body that can trigger headache pain, nausea, sensitivity to light, and other migraine symptoms. This medication is specifically effective for patients who experience moderate to severe migraines and is often prescribed when other treatments have not provided sufficient relief. It is typically taken orally as soon as migraine symptoms begin, but it is not intended for preventing migraines or treating cluster headaches. Patients are advised to follow their healthcare provider's instructions carefully to maximize the benefits and minimize potential side effects.