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Efficacy of atomoxetine versus midodrine for neurogenic orthostatic hypotension.


ABSTRACT: OBJECTIVE:The efficacy and safety of 1-month atomoxetine and midodrine therapies were compared. Three-month atomoxetine and combination therapies were investigated for additional benefits. METHODS:This prospective open-label randomized trial included 50 patients with symptomatic neurogenic orthostatic hypotension (nOH). The patients received either atomoxetine 18 mg daily or midodrine 5 mg twice daily and were evaluated 1 and 3 months later. Those who still met the criteria for nOH at 1 month received both midodrine and atomoxetine for an additional 2 months, and if not, they continued their initial medication. The primary outcome was an improvement in orthostatic blood pressure (BP) drop (maximum BP change from supine to 3 min after standing) at 1 month. The secondary endpoints were symptom scores, percentage of patients with nOH at 1 and 3 months. RESULTS:Patients with midodrine or atomoxetine treatment showed comparative improvement in the orthostatic BP drop, and overall only 26.2% of the patients had nOH at 1 month, which was similar between the treatment groups. Only atomoxetine resulted in significant symptomatic improvements at 1 month. For those without nOH at 1 month, there was additional symptomatic improvement at 3 months with their initial medication. For those with nOH at 1 month, the combination treatment resulted in no additional improvement. Mild-to-moderate adverse events were reported by 11.6% of the patients. INTERPRETATION:One-month atomoxetine treatment was effective and safe in nOH patients. Atomoxetine improved orthostatic BP changes as much as midodrine and was better in terms of ameliorating nOH symptoms.

SUBMITTER: Byun JI 

PROVIDER: S-EPMC6952305 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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