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Pitolisant: A Review in Narcolepsy with or without Cataplexy

Abstract

Pitolisant (Wakix®), an orally available, first-in-class antagonist/inverse agonist of the histamine 3 receptor, is approved in the EU (as of March 2016) for the treatment of narcolepsy with or without cataplexy in adults and in the USA (as of August 2019) for the treatment of excessive daytime sleepiness (EDS) in adults with narcolepsy. Pitolisant was demonstrated to have minimal risk of abuse in preclinical and clinical studies, and is the only anti-narcoleptic drug not scheduled as a controlled substance in the USA. The totality of evidence from pivotal and supportive phase III trials suggests that pitolisant administered at up to the recommended maximum dose of 36 mg once daily reduces EDS and cataplexy in adults with narcolepsy relative to placebo. Noninferiority of pitolisant to modafinil in the management of EDS was not demonstrated. Pitolisant was generally well tolerated in clinical trials. Consistent with its mechanism of action, the most common treatment-emergent adverse events included headache, insomnia and anxiety. With minimal abuse potential and offering the convenience of oral, once-daily administration, pitolisant extends the range of approved treatment options available to adult patients with narcolepsy with or without cataplexy.

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Acknowledgements

During the peer review process, the manufacturer of pitolisant was also offered an opportunity to review this article. Changes resulting from comments received were made on the basis of scientific and editorial merit.

Author information

Correspondence to Yvette N. Lamb.

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Funding

The preparation of this review was not supported by any external funding.

Conflict of interest

Yvette Lamb is a salaried employee of Adis International Ltd/Springer Nature, is responsible for the article content and declares no relevant conflicts of interest.

Additional information

Additional information for this Adis Drug Evaluation can be found at https://doi.org/10.6084/m9.figshare.11369862.

The manuscript was reviewed by:S. de Biase, Neurology Unit, Department of Experimental and Clinical Medical Sciences, University of Udine Medical School, Udine, Italy; M. M. J. Muller, Department of Psychiatry, University of Mainz, Mainz, Germany; M. G. Şenol, Department of Neurology, Sağlik Bilimleri University, Istanbul, Turkey.

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Lamb, Y.N. Pitolisant: A Review in Narcolepsy with or without Cataplexy. CNS Drugs 34, 207–218 (2020). https://doi.org/10.1007/s40263-020-00703-x

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