• C M Perry and A Markham.
• Adis International Limited, Auckland, New Zealand. demail@adis.co.nz
• Drugs. 1998 Jun 1;55(6):889-922.

UnlabelledSumatriptan is a selective agonist at serotonin 5-HT1-like receptors, including 5-HT1B/1D subtypes. It is an effective treatment for acute migraine attacks and the injectable form has also shown efficacy in the treatment of cluster headaches. In placebo-controlled clinical trials, sumatriptan, administered subcutaneously, orally, intranasally or rectally was significantly more effective than placebo in relieving migraine headache and in producing resolution or reduction of other symptoms associated with migraine, including nausea, photophobia and phonophobia. Improvements in clinical disability were also significantly greater after sumatriptan than after placebo. Headache recurred in 21 to 57% of patients who received oral or subcutaneous sumatriptan, but most patients responded to a second dose of the drug. Results of comparative trials showed that subcutaneous sumatriptan 6 mg was significantly more effective than either patients' usual antimigraine treatments or intranasal dihydroergotamine mesylate 1 mg in relieving migraine headache. Subcutaneous sumatriptan 6 mg and subcutaneous dihydroergotamine mesylate 1 mg provided similarly effective migraine relief, but the headache recurrence rate was significantly higher after sumatriptan than after this formulation of dihydroergotamine mesylate. Response rates achieved after oral sumatriptan were similar to those reported after treatment with oral naratriptan, rizatriptan or lysine acetylsalicylate plus metoclopramide. Treatment of acute migraine attacks with oral or subcutaneous sumatriptan leads to less loss of workplace productivity than other antimigraine therapies. Several pharmacoeconomic analyses showed that gains in workplace productivity in sumatriptan recipients ranged from 12.1 to 89.8 hours per patient per year. Significant improvements from baseline in overall health-related quality-of-life scores were also experienced by sumatriptan recipients. Sumatriptan is generally well tolerated. Nausea, vomiting, malaise and fatigue are the most common adverse events with oral sumatriptan. Injection site reactions occur in 10 to 40% of patients receiving the drug subcutaneously. A bitter taste at the back of the mouth occurs frequently after intranasal administration. Serious adverse events occur in about 0.14% of patients with migraine treated with sumatriptan. As the drug is associated with the rare development of cardiovascular effects, it is contraindicated in patients with a history of cardiovascular disease.ConclusionsDespite its relatively high acquisition cost, reductions in lost workplace productivity experienced by patients treated with sumatriptan may result in savings in the overall cost of migraine to society. Thus, sumatriptan is a useful first- or second-line treatment option for patients with moderate or severe migraine.

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