Skip to main navigation Skip to main content Skip to footer For Medicare For Providers For Brokers For Employers Español For Individuals & Families: For Individuals & Families Medical Dental Other Supplemental Explore coverage through work How to Buy Health Insurance Types of Dental Insurance Open Enrollment vs. Special Enrollment See all topics Shop for Medicare plans Member Guide Find a Doctor Log in to myCigna
Home Knowledge Center Wellness Library calcium, magnesium, potassium, and sodium oxybates

calcium, magnesium, potassium, and sodium oxybates

Pronunciation: KAL see um, mag NEE zee um, poe TAS ee um, and SOE dee um OX i bate

Brand: Xywav

What is the most important information I should know about this medicine?

What is the most important information I should know about this medicine?

This medicine can cause breathing problems, seizure, loss of consciousness, or death, especially if you also use other sleep medicine, opioid pain medicine, a muscle relaxer, or medicine for anxiety, depression, mental illness, or seizures.

Do not drink alcohol together with Xywav.

The morning after taking this medicine, wait at least 6 hours or until you are fully awake before you do anything that requires you to be awake and alert.

May be habit-forming. Misuse can cause addiction, overdose, or death. Keep the medication in a place where others cannot get to it.

What is calcium, magnesium, potassium, and sodium oxybates (Xywav)?

What is calcium, magnesium, potassium, and sodium oxybates (Xywav)?

Xywav is a central nervous system depressant. It is used to treat cataplexy (sudden loss of muscle strength) or to reduce daytime sleepiness caused by narcolepsy. For these conditions, Xywav is for use in adults and children at least 7 years old.

Xywav is also used in adults to reduce daytime sleepiness caused by idiopathic hypersomnia (an uncommon chronic sleep disorder that causes daytime sleepiness even after a good night's sleep).

Xywav contains GHB, a known street drug of abuse. Because of the potential for abuse and serious side effects, Xywav is available only from a certified pharmacy under a special program. You must be registered in the program and understand the risks and benefits of this medicine.

Xywav may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before taking this medicine?

What should I discuss with my healthcare provider before taking this medicine?

Do not drink alcohol or take other sleep medicines together with Xywav. Dangerous side effects or death could occur.

Do not give Xywav to anyone with a rare metabolic disorder called succinic semialdehyde dehydrogenase deficiency (which can cause mental or physical impairment).

Tell your doctor if you have ever had:

  • breathing problems;
  • snoring, or sleep apnea (breathing stops during sleep);
  • depression or suicidal thoughts;
  • psychosis or unusual behaviors (anxiety, agitation, paranoia, aggression, hallucinations);
  • liver disease; or
  • a drug addiction.

Tell your doctor if you are pregnant or breastfeeding.

Not approved for use by anyone younger than 7 years old with narcolepsy. Not approved for use by anyone younger than 18 years old with idiopathic hypersomnia.

How should I take this medicine?

How should I take this medicine?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Xywav can cause severe drowsiness and can slow or stop your breathing, even at regular doses or if you are also taking stimulant medicine. Use your medicine exactly as directed.

Xywav may be habit-forming. Misuse can cause addiction, overdose, or death. Keep the medication in a place where others cannot get to it. Selling or giving away this medicine is against the law. Do not allow anyone else to use this medicine.

Xywav is taken as 1 nightly dose, or as 2 doses (once at bedtime and again 2.5 to 4 hours later). Do not take Xywav within 2 hours after eating.

Xywav must be mixed with 2 ounces (1/4 cup) of water in the child-resistant dosing cups provided with the medication.

If you take 2 nightly doses, prepare both doses while you are getting ready for bed. Place the second dose in a secure location next to your bed so you can take it without getting up. You may need to set an alarm to awaken for the second dose.

This medicine works quickly. Most people fall asleep within 5 to 15 minutes.

Take Xywav only while you are sitting in bed ready for sleep. Some people have fallen asleep while standing or getting up from bed, which has caused injuries serious enough to need treatment in a hospital.

Do not allow a child to use this medicine without adult supervision.

Do not change your dose or stop using Xywav suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

Store at room temperature away from moisture and heat. Keep your medicine in a place where no one can use it improperly.

Throw away any dose not used within 24 hours after mixing.

Do not keep leftover Xywav liquid. Ask your pharmacist where to locate a drug take-back disposal program. If there is no take-back program, pour any unused liquid medicine down a sink drain.

What happens if I miss a dose?

What happens if I miss a dose?

Skip the missed dose and use your next dose at the regular time. Do not use two doses at one time.

Take Xywav only during your normal sleeping hours (wait at least 2 hours after eating).

What happens if I overdose?

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of Xywav can be fatal.

Overdose symptoms may include sweating, vomiting, severe confusion, loss of balance or coordination, or seizure (convulsions).

What should I avoid while taking this medicine?

What should I avoid while taking this medicine?

Do not drink alcohol. Dangerous side effects or death could occur.

Do not take other sleep medicines together with Xywav.

Xywav will cause drowsiness and can impair your thinking or reactions. You may still feel sleepy the morning after taking this medicine. Wait at least 6 hours or until you are fully awake before you drive, operate machinery, pilot an airplane, or do anything that requires you to be awake and alert.

What are the possible side effects of this medicine?

What are the possible side effects of this medicine?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • weak or shallow breathing, breathing that stops for short periods of time;
  • severe drowsiness, feeling light-headed;
  • sleepwalking (may result in an injury), waking and confused behavior at night;
  • a seizure;
  • depression, anxiety, unusual or unpleasant thoughts;
  • feelings of low self-worth, loss of interest in things you once enjoyed;
  • confusion, paranoia, hallucinations (seeing or hearing things);
  • increased tiredness, trouble concentrating; or
  • suicidal thoughts or actions.

Common side effects may include:

  • sleepwalking, talking or eating in your sleep;
  • new sleep problems, strange dreams, night terrors;
  • drowsiness, dizziness, tiredness, headache;
  • tremors, anxiety;
  • dry mouth, nausea, vomiting, diarrhea;
  • weight loss; or
  • bedwetting (in children).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect this medicine?

What other drugs will affect this medicine?

Fatal side effects can occur if you take Xywav with other drugs that cause drowsiness or slow your breathing. Ask your doctor before taking cold or allergy medicine, opioid medication, sedatives, muscle relaxers, seizure medicine, or medicine for depression, anxiety, or mental illness.

If you start or stop taking divalproex (Depakote), your doctor may need to adjust your Xywav dose.

Other drugs may affect Xywav, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

Where can I get more information?

Where can I get more information?

Your pharmacist can provide more information about calcium, magnesium, potassium, and sodium oxybates (Xywav).

This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

<cipublic-spinner variant="large"><span>Loading…</span></cipublic-spinner>

Page Footer

I want to...

Get an ID card File a claim View my claims and EOBs Check coverage under my plan See prescription drug list Find an in-network doctor, dentist, or facility Find a form Find 1095-B tax form information View the Cigna Glossary Contact Cigna

Audiences

Individuals and Families Medicare Employers Brokers Providers

Secure Member Sites

myCigna member portal Health Care Provider portal Cigna for Employers Client Resource Portal Cigna for Brokers

The Cigna Group Information

About The Cigna Group Company Profile Careers Newsroom Investors Suppliers The Cigna Group Third Party Administrators International Evernorth

 Cigna. All rights reserved.

Privacy Legal Product Disclosures Cigna Company Names Customer Rights Accessibility Non-Discrimination Notice Language Assistance [PDF] Report Fraud Sitemap Cookie Settings

Disclaimer

Individual and family medical and dental insurance plans are insured by Cigna Health and Life Insurance Company (CHLIC), Cigna HealthCare of Arizona, Inc., Cigna HealthCare of Illinois, Inc., Cigna HealthCare of Georgia, Inc., Cigna HealthCare of North Carolina, Inc., Cigna HealthCare of South Carolina, Inc., and Cigna HealthCare of Texas, Inc. Group health insurance and health benefit plans are insured or administered by CHLIC, Connecticut General Life Insurance Company (CGLIC), or their affiliates (see a listing of the legal entities that insure or administer group HMO, dental HMO, and other products or services in your state). Accidental Injury, Critical Illness, and Hospital Care plans or insurance policies are distributed exclusively by or through operating subsidiaries of Cigna Corporation, are administered by Cigna Health and Life Insurance Company, and are insured by either (i) Cigna Health and Life Insurance Company (Bloomfield, CT); (ii) Life Insurance Company of North America (“LINA”) (Philadelphia, PA); or (iii) New York Life Group Insurance Company of NY (“NYLGICNY”) (New York, NY), formerly known as Cigna Life Insurance Company of New York. The Cigna name, logo, and other Cigna marks are owned by Cigna Intellectual Property, Inc. LINA and NYLGICNY are not affiliates of Cigna.

All insurance policies and group benefit plans contain exclusions and limitations. For availability, costs and complete details of coverage, contact a licensed agent or Cigna sales representative. This website is not intended for residents of New Mexico.

Selecting these links will take you away from Cigna.com to another website, which may be a non-Cigna website. Cigna may not control the content or links of non-Cigna websites. Details