Xywav is a medication used to treat cataplexy or excessive daytime sleepiness. It contains a mixture of the oxybate salts calcium oxybate, magnesium oxybate, potassium oxybate, and sodium oxybate. It is a central nervous system (CNS) depressant and it is taken by mouth.
Manufactured by the Jazz Pharmaceuticals company, it was approved for medical use in the United States in July 2020.
Xywav is indicated for the treatment of cataplexy or excessive daytime sleepiness in people aged seven years of age and older with narcolepsy; and for idiopathic hypersomnia.
The US Food and Drug Administration (FDA) label for Xywav contains a boxed warning for central nervous system depression, abuse, and misuse.
Slowed breathing, trouble breathing, sleep apnea.
Confusion, hallucination, unusual or disturbing thoughts (abnormal thinking), anxiety, depression, suicidal thoughts or actions, increased tiredness, feelings of guilt or worthlessness, and difficulty concentrating.
Sleepwalking.
The sodium oxybate component of Xywav was granted orphan drug designation in November 1994 by the FDA. Xywav is a prescription drug and a Schedule III controlled substance in the United States.
In the testing phase of the drug, it was known as JZP-258.
Calcium, magnesium, potassium, and sodium oxybate is another name for gamma hydroxybutyrate (GHB).
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