Fig. 2

PRISMA flowchart of the study. The systematic search yielded a total of 10,826 unique records. Title and abstract screening resulted in 1276 records potentially eligible, and after full‐text review 5 records proved eligible. Records that did not describe full‐text peer‐reviewed reports of randomized placebo-controlled trials in participants ≥ 18 years old of flunarizine in migraine prevention were excluded