Flunarizine as prophylaxis for episodic migraine: a systematic review with meta-analysis.

Published

Journal Article

Based on few clinical trials, flunarizine is considered a first-line prophylactic treatment for migraine in several guidelines. In this meta-analysis, we examined the pooled evidence for its effectiveness, tolerability, and safety. Prospective randomized controlled trials of flunarizine as a prophylaxis against migraine were identified from a systematic literature search, and risk of bias was assessed for all included studies. Reduction in mean attack frequency was estimated by calculating the mean difference (MD), and a series of secondary outcomes-including adverse events (AEs)-were also analyzed. The database search yielded 879 unique records. Twenty-five studies were included in data synthesis. We scored 31/175 risk of bias items as "high," with attrition as the most frequent bias. A pooled analysis estimated that flunarizine reduces the headache frequency by 0.4 attacks per 4 weeks compared with placebo (5 trials, 249 participants: MD -0.44; 95% confidence interval -0.61 to -0.26). Analysis also revealed that the effectiveness of flunarizine prophylaxis is comparable with that of propranolol (7 trials, 1151 participants, MD -0.08; 95% confidence interval -0.34 to 0.18). Flunarizine also seems to be effective in children. The most frequent AEs were sedation and weight increase. Meta-analyses were robust and homogenous, although several of the included trials potentially suffered from high risk of bias. Unfortunately, reporting of AEs was inconsistent and limited. In conclusion, pooled analysis of data from partially outdated trials shows that 10-mg flunarizine per day is effective and well tolerated in treating episodic migraine-supporting current guideline recommendations.

Full Text

Duke Authors

Cited Authors

  • Stubberud, A; Flaaen, NM; McCrory, DC; Pedersen, SA; Linde, M

Published Date

  • April 2019

Published In

Volume / Issue

  • 160 / 4

Start / End Page

  • 762 - 772

PubMed ID

  • 30699098

Pubmed Central ID

  • 30699098

Electronic International Standard Serial Number (EISSN)

  • 1872-6623

International Standard Serial Number (ISSN)

  • 0304-3959

Digital Object Identifier (DOI)

  • 10.1097/j.pain.0000000000001456

Language

  • eng