Sumaptan, also known as sumatriptan, is primarily used to treat acute migraine attacks, whether the headache is accompanied by symptoms such as nausea and sensitivity to light or not. The drug works to constrict blood vessels in the brain, which helps relieve pain and reduce symptoms associated with the attack. It is also sometimes used to treat cluster headache attacks.
Sumaptan should be used with caution and according to the doctor's instructions, as it is not intended to prevent headaches or reduce the number of attacks, but rather to treat acute symptoms as soon as they appear.