Harmony Biosciences Management, Inc.

This study tests whether HBS-301 (pitolisant) can reduce excessive daytime sleepiness and cataplexy (sudden muscle weakness) in adults with narcolepsy. Participants receive either the drug or a placebo for several weeks, followed by an open-label phase where everyone gets the dru…

This study tests an experimental drug called HBS-301 to see if it can reduce symptoms of idiopathic hypersomnia, a condition causing severe daytime sleepiness, trouble waking up, and fatigue. About 248 adults with moderate to very severe symptoms will receive either the drug or a…

This Phase 3 trial tests whether pitolisant can reduce excessive daytime sleepiness in people aged 6 and older with Prader-Willi syndrome. About 134 participants will receive either pitolisant or a placebo, and researchers will also look at effects on behavior and appetite. The s…

This study tracks pregnant women with narcolepsy who take pitolisant (Wakix) or other narcolepsy medications, as well as pregnant women without narcolepsy who take pitolisant. Researchers compare pregnancy outcomes, including birth defects, to see if the drug poses risks. The goa…