Abstract

IntroductionStudies have shown that narcolepsy patients may present with low serum acylcarnitine levels, demonstrating a dysfunctional beta fatty acid oxidation pathway in these patients.ObjectiveEvaluate the therapeutic efficacy of L-carnitine as a treatment for narcolepsy patients.MethodsThis study runned in form of systematic review. The terms used for the search: (“narcolepsy”[MeSH Terms] OR “narcolepsy”[All Fields]) AND (“carnitine”[MeSH Terms] OR “carnitine”[All Fields] OR “l carnitine”[All Fields]). Were included all surveys published until January 2021, with the diagnosis of narcolepsy, that performed drug treatment with I-carnitine. The clinical endpoints of interest were: excessive daytime sleepiness, dissociative REM sleep manifestations: cataplexy, sleep paralysis, hypnagogic hallucinations, and early REM sleep (REM sleep naps, SOREMP).ResultsL-carnitine was found to be well-tolerated and without side effects in all surveys, at dosages ranging from 500 to 510 mg/day. Newborns did not present complications during delivery.ConclusionThis study corroborates the efficacy and good tolerability of L-carnitine therapy as a treatment for patients with narcolepsy, including during pregnancy.

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