Abstract
Rizatriptan (MAXALT® MK-0462) is a new 5-HT1B/1D receptor agonist for the acute treatment of migraine. The marketed 10 mg and 5 mg oral doses are rapidly and consistently effective in relieving headache pain with associated migraine symptoms, and in enabling patients to return to their normal activities of daily living. Rizatriptan 10 mg is more effective than rizatriptan 5 mg. Compared to oral sumatriptan, the established agent in this class, rizatriptan has a shorter Tmax and greater bioavailability. In comparative clinical trials, the probability of having pain relief sooner was higher for rizatriptan 10 mg than for sumatriptan 100 mg or 50 mg. Over the 2 h after dosing, rizatriptan 10 mg was also superior to sumatriptan 100 mg and 50 mg on a range of other outcome measures. Both doses of rizatriptan are well-tolerated. The most common side-effects are dizziness, drowsiness, and asthenia/fatigue, which are short-lasting and of mild or moderate severity. In summary, rizatriptan is an effective and well-tolerated acute treatment for migraine, which may offer some advantages over oral sumatriptan.
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