Modafinil is approved for excessive daytime sleepiness in narcolepsy, obstructive sleep apnoea (OSA), and shift work sleep disorder (SWSD), but its widespread off-label use raises safety concerns. We evaluated the risk of adverse events (AEs) associated with both labelled and off-label use of modafinil. A systematic search of PubMed, Embase, and Cochrane identified 54 studies that met the inclusion criteria. In labelled uses, narcolepsy patients had significantly elevated risks of diarrhoea…
