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Zolmitriptan Nasal Spray in the Acute Treatment of Cluster Headache: A Meta-Analysis of Two Studies

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To conduct an individual subject meta-analysis of available controlled studies of zolmitriptan nasal spray in the acute treatment of cluster headache. Background.—

Two double-blind, placebo-controlled, randomized, crossover studies of zolmitriptan nasal spray in the acute treatment of cluster headache, with similar patient populations, protocol designs, doses, and clinical endpoints have been published. Methods.—

In both double-blind studies, each patient was to treat 3 attacks, 1 with placebo, 1 with zolmitriptan 5 mg, and 1 with zolmitriptan 10 mg in a randomized, crossover manner. Headache intensity was rated on a 5-point scale (none to very severe). The primary endpoint was headache relief at 30 minutes post dose: reduction from moderate, severe, or very severe pain to mild or none. A multilevel, random-effects, logistic regression model was used to analyze the data. Results.—

A total of 121 patients (100 male; 64.5% with episodic cluster headache) provided efficacy data for at least 1 attack. Zolmitriptan 5 mg and 10 mg were significantly more effective at providing headache relief at 30 minutes post treatment than placebo (odds ratio 3.48; 95% confidence interval 1.49-8.10 and odds ratio 8.68; 95% confidence interval: 3.35-22.5, respectively). For episodic cluster headache, response rates were 35.6%, 51.7%, and 73.7% for placebo, zolmitriptan 5 mg (odds ratio 2.5; P = .06 vs placebo), and 10 mg (odds ratio 9.9; P < .001 vs placebo), respectively. For chronic cluster headache, response rates were 17.2%, 41.9%, and 40.7% for placebo, zolmitriptan 5 mg (odds ratio 8.1; P = .035), and 10 mg (odds ratio 7.6; P = .046), respectively. Zolmitriptan was well tolerated in both studies with no serious adverse events reported. Conclusion.—

Zolmitriptan nasal spray at a dose of 5 mg and 10 mg is efficacious in the acute treatment of episodic and chronic cluster headache.

Keywords: acute headache treatment; chronic; cluster headache; double-blind; episodic; zolmitriptan

Document Type: Research Article


Publication date: October 1, 2009


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