Use Of Flunarizine As A Preventive For Vestibular Migraine Crises In Comparison With Other Drugs: Systematic Literature Review

INTRODUCTIONVestibular migraine is the main cause of episodic vertigo and the second most common cause of dizziness in adults. Treatment for vestibular migraine encompasses the prevention of crises and the control of acute symptoms. Flunarizine works by preventing the contraction of labyrinthine vessels and altering blood flow, thus preventing symptoms. Due to the high prevalence of the disease, its negative impacts on individual health and increased expenditure on public health, preventive pharmacological and non-pharmacological treatment must be implemented early. PURPOSETo evaluate the efficacy of Flunarizine as a preventive for migraine and vestibular crises compared to other preventive drugs. MATERIAL AND METHODSScientific articles were searched in the databases using the terms (vestibular migraine OR migrainous vertigo) AND (flunarizine) AND (prophylaxis). Subsequently, a systematic literature review and meta-analysis was performed, including 3 randomized clinical trials comparing flunarizine and other preventive drugs in terms of efficacy and safety for preventing migraine vertigo attacks. The studies were analyzed using a ROB table, analysis using the GRADE method and meta-analysis. RESULTSQualitatively, the analysis showed that flunariniza was positive for decreasing the frequency of vertigo in cases of vestibular migraine, with a moderate degree of evidence, a relative risk of 0.34 and a confidence interval of 0.15 to 0.76. CONCLUSIONSThere are few studies available in the scientific literature on the use of flunarizine in vestibular migraine, many of which are heterogeneous among themselves, mainly in the way of evaluating and monitoring patients, carried out mainly through subjective methods. The meta-analysis showed a positive result for flunarizine as a preventive drug for the studied population. Furthermore, in all the studies analyzed, no serious side effects resulting from the use of the medication were reported, which makes it safe for patients to use. Flunarizine is a good drug for the prevention of vestibular migraine, especially in reducing the number of attacks, with a good level of evidence.