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  • Title: Zolmitriptan 5 mg nasal spray: efficacy and onset of action in the acute treatment of migraine--results from phase 1 of the REALIZE Study.
    Author: Gawel M, Aschoff J, May A, Charlesworth BR, REALIZE Study Team.
    Journal: Headache; 2005 Jan; 45(1):7-16. PubMed ID: 15663607.
    Abstract:
    OBJECTIVES: The objective of phase 1 (reported here) of this two-phase study was to assess the efficacy of zolmitriptan 5 mg nasal spray, in terms of ability to provide relief from all migraine symptoms, in a controlled setting, designed to replicate clinical practice. BACKGROUND: Zolmitriptan nasal spray has been shown to be fast acting and highly effective in the treatment of migraine, as assessed using standard endpoints, such as headache response and pain-free rates. METHODS: In the double-blind first phase of the study, patients with migraine were randomized to receive zolmitriptan 5 mg nasal spray or placebo to treat a single migraine attack. Attacks were treated according to patients' normal patterns of use, in order to closely reflect clinical practice; that is, no specific regimen was dictated in terms of time to treatment or at what level of pain intensity the headache should be treated. Patients could take a second dose of study medication or an agreed escape medication if adequate pain relief had not been achieved 2 hours after the first dose. The primary efficacy endpoint was total symptom relief (freedom from pain, nausea, photophobia, and phonophobia) 1 hour after the first dose. Secondary efficacy endpoints included headache response, pain-free status and sustained pain-free status, and ability to perform normal activities. RESULTS: The intention-to-treat population comprised 461 zolmitriptan nasal spray recipients and 451 placebo recipients. The total symptom relief rate 1 hour post-dose was significantly higher in the zolmitriptan 5 mg nasal spray group than in the placebo group (14.5% vs. 5.1%; P < .0001); the difference between the groups was significant from 30 minutes post-dose. Treatment with zolmitriptan nasal spray, compared with placebo, also produced a higher headache response rate from 10 minutes post-dose (15.1% vs. 9.1%; P = .0079) and a higher pain-free rate from 30 minutes post-dose (7.7% vs. 3.2%; P = .0039). Zolmitriptan nasal spray was also significantly superior to placebo in terms of sustained pain-free status and patients' ability to perform normal activities. Zolmitriptan nasal spray was well tolerated. CONCLUSIONS: These findings confirm the efficacy demonstrated by zolmitriptan nasal spray in previous clinical trials.
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