Relpax Dosage/Direction for Use

RELPAX tablets should be taken as early as possible after the onset of migraine headache but they are also effective if taken at a later stage.
RELPAX tablets should not be used prophylactically.
Adults (18-65 Years of Age): The recommended initial dose is 40 mg.
If headache returns within 24 hours: If after an initial response migraine headache recurs within 24 hours, an additional dose of the same strength of RELPAX has been shown to be effective in treating the recurrence. If a second dose is required, it should not be taken within 2 hours of the initial dose.
If no response is obtained: If a patient does not achieve a headache response to the first dose of RELPAX within 2 hours, a second dose should not be taken for the same attack as clinical trials have not adequately established efficacy with the second dose. Clinical trials show that the majority of patients who do not respond to the treatment of an attack will respond to the treatment of a subsequent attack.
Patients who do not obtain satisfactory efficacy with 40 mg may be effectively treated with 80 mg in a subsequent migraine attack.
The maximum daily dose should not exceed 160 mg.
Elderly (over 65 years of age): Safety and efficacy in patients over 65 years of age have not been systematically evaluated due to a small number of such patients in clinical trials. Blood pressure effects may be more marked in this population than in younger adults (see Precautions).
Adolescents (12-17 years of age): In a clinical trial in adolescents, a high placebo response rate was observed. The efficacy of RELPAX has not been established in this population and its use is therefore not recommended in this age group.
Children (6-11 years of age): The safety and efficacy of RELPAX in children have not been evaluated. Therefore, the use of RELPAX is not recommended in this age group (see Pharmacology: Pharmacokinetics under Actions).
Hepatic Impairment: No dose adjustment is required in patients with mild or moderate hepatic impairment. As RELPAX has not been studied in patients with severe hepatic impairment, it is contraindicated in these patients.
Renal Impairment: As the blood pressure effects of RELPAX are amplified in renal impairment (see Precautions), doses higher than 40 mg should be used with caution.
Administration: The tablets should be swallowed whole with water.