Efficacy and safety of amantadine in the treatment of fatigue in multiple sclerosis: a systematic review and meta-analysis of randomized controlled trials. - Amin AM; Kashbour M; Alsokery AF; Nady A; Wagdy M; Awadallah AE; Aboyadak AR; Meshref M (Journal of neural transmission (Vienna, Austria : 1996), 2026)