Calcium, Magnesium, Potassium, and Sodium Oxybates
Xywav is a brand-name medication containing oxybate salts used to treat cataplexy and excessive daytime sleepiness in patients 7 years and older with narcolepsy, as well as idiopathic hypersomnia. It promotes sleep onset and reduces sudden muscle weakness episodes, allowing patients to maintain wakefulness during the day.
Xywav is a prescription sleep-promoting medication for narcolepsy-related symptoms and idiopathic hypersomnia in adults and children.
Key facts at a glance
- RxNorm
- 2393800
- Generic
- Xywav
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Xywav is FDA-approved for treating cataplexy (sudden muscle weakness) and excessive daytime sleepiness in narcolepsy patients age 7 and older, as well as idiopathic hypersomnia.
Xywav contains oxybate salts that act on GABA-B receptors in the central nervous system, promoting sleep onset and reducing cataplexy episodes through its effects on sleep-wake regulation.
Xywav is a Schedule III controlled substance with risk of dependence and abuse. Patients must take it while in bed due to rapid sleep onset and risk of sleepwalking. It requires precise dosing and monitoring for respiratory depression. The formula contains significant sodium content. Common side effects include headache, nausea, dizziness, and sleepwalking.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 24, 2026. · Read our editorial policy