What is the function of sumatriptan?

Sumatriptan is a medication that belongs to a class of drugs known as triptans, which are specifically designed to treat migraine headaches. The primary function of sumatriptan is to alleviate migraine symptoms by constricting blood vessels in the brain, which helps to counteract the changes in blood flow thought to be associated with migraines. It also works by reducing the release of certain chemicals in the brain that can trigger the head pain associated with migraines.

In considering the other options, treating hypertension involves medications that lower blood pressure, managing infections generally requires antibiotics or antiviral medications, and controlling blood sugar pertains to diabetes management with insulin or other hypoglycemic agents. Each of these functions is distinct and does not overlap with the primary action of sumatriptan, which is specifically focused on migraine relief.