In clinical pharmacology studies, healthy subjects were administered single doses of up to 200 mg daridorexant (4 times the recommended dose). At supra-therapeutic doses, adverse reactions of somnolence, muscular weakness, disturbance in attention, fatigue, headache, and constipation were observed.
There is no specific antidote to an overdose of daridorexant. In the event of an overdose, general symptomatic and supportive medical care should be provided and patients should be carefully monitored. Dialysis is unlikely to be effective as daridorexant is highly protein-bound.