Rizatriptan is a member of the “triptan” drug family, which is used to treat severe migraine headaches. Head vascular enlargement may be the source of migraine symptoms. It is believed that rizatriptan will lessen these blood vessels’ edema. This aids in the relief of the headache as well as other migraine symptoms, like light and sound sensitivity and feeling or vomiting nauseous. Only when a migraine episode has begun does rizatriptan start to act. It won’t prevent an attack from happening to you. Anticipated Gain: There should be relief in one to two hours.