Skip to main content
Lumryz Coupon - Lumryz 7 packets of 4.5g carton

Lumryz

sodium oxybate
Used for Narcolepsy
Used for Narcolepsy

Lumryz (sodium oxybate) is used to help adults and children 7 years and older with narcolepsy. It treats cataplexy and excessive daytime sleepiness. This medication works as a central nervous system depressant. Lumryz (sodium oxybate) comes as packets of powder that you need to mix with water before you take your dose. It's an extended-release medication that you only need to take just once each night. Side effects can include nausea, dizziness, headache, and bedwetting. Lumryz (sodium oxybate) is only available by prescription as a brand-name medication.

Last reviewed on September 2, 2025
Lumryz (sodium oxybate) is a controlled substance, which means that it's more likely to be misused or cause dependence. There are federal and state laws that limit the amount of medication that can be prescribed or dispensed within a certain period of time.
basics-icon

What is Lumryz (sodium oxybate)?

What is Lumryz (sodium oxybate) used for?

How Lumryz (sodium oxybate) works

Lumryz (sodium oxybate) is a central nervous system (CNS) depressant. We don't exactly know how it works. But researchers think it affects proteins in the brain called gamma-aminobutyric acid (GABA) receptors. This might help with cataplexy and feeling too sleepy during the day for people who have narcolepsy.

Are you looking for information on sodium oxybate (Xyrem) instead?
When does Lumryz (sodium oxybate) start working?
Time passed since treatment started:
HOURS
DAYS
WEEKS
MONTHS
Full effect

Drug Facts

Common BrandsLumryz
Drug ClassCNS depressant
Controlled Substance ClassificationSchedule III
Generic StatusNo lower-cost generic available
AvailabilityPrescription only
coupon-save-icon

Get your GoodRx coupon

Avg retail price
$12102.07(save 15.43%)
GoodRx discount
$10235.00
See prices
warings-icon

What are the risks and warnings for Lumryz (sodium oxybate)?

Lumryz (sodium oxybate) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.

risk-warning

Potential for misuse

  • Risk factors: Personal or family history of substance or alcohol use disorder | History of mental health problems | Taking more of Lumryz (sodium oxybate) than prescribed

    Lumryz (sodium oxybate) is a controlled substance because it has a risk of misuse. Misuse can lead to serious, life-threatening problems. This can include seizure, extremely slowed breathing, and overdose. Misusing this medication can sometimes also lead to addiction. If you're worried about these risks, talk to your prescriber.

    risk-warning

    Changes in mental alertness and potentially deadly slowed breathing

    • Risk factors: Drinking alcohol | Taking other CNS depressants | History of breathing problems (e.g., sleep apnea)

      Lumryz (sodium oxybate) can slow your breathing down to the point where it's life-threatening. This can look like shortness of breath, slow and shallow breathing, and bluish-colored lips, fingers, or toes. If this change in your breathing isn't recognized and treated right away, it can lead to death. Get medical help right away if you or a loved one notices that you have symptoms of extremely slowed breathing.

      Lumryz (sodium oxybate) can slow down your brain activity. This can make you very sleepy and have trouble thinking, focusing, and reacting. Don't drive or perform any activities that require you to be alert until you know how this medication affects you, and especially for at least 6 hours after taking it.

      Changes in mental alertness and slowed breathing can happen at any time while you're taking Lumryz (sodium oxybate) and even at recommended doses. But your risk is higher if you drink alcohol or take other CNS depressants, such as opioids, muscle relaxants, or antipsychotics, while you're taking Lumryz (sodium oxybate). Speak to your prescriber if you have concerns about these risks.

      risk-warning

      Changes in mental alertness

      • Risk factors: Drinking alcohol | Taking other CNS depressants

        As a CNS depressant, Lumryz (sodium oxybate) can slow down your brain. This can make you feel very sleepy and have trouble thinking, focusing, and reacting to things.

        Don't drive or do anything that needs your full attention until at least 6 hours after you take Lumryz (sodium oxybate). In general, it's also good idea to avoid these things until you know how this medication affects you.

        You can have changes in mental alertness at any time while taking Lumryz (sodium oxybate), even at recommended doses. Don't drink alcohol while taking this medication because it can raise your risk. Also don't take other CNS depressants, like opioids or other sedatives. Talk to your prescriber if you're worried about these risks.

        risk-warning

        Dangerously slowed breathing

        • Risk factors: History of breathing problems (e.g., sleep apnea) | Drinking alcohol | Taking other CNS depressants

          Lumryz (sodium oxybate) can slow your breathing down to the point where it's very dangerous. This can look like shortness of breath and slow and shallow breathing. It can lead to bluish-colored lips, fingers, or toes. If slowed breathing isn't recognized and treated right away, it can be life-threatening. If you or a close one notices that your breathing is extremely slow, get medical help right away.

          Your breathing can slow down at any time while you're taking Lumryz (sodium oxybate). It can even get slow at recommended doses. But your risk is higher if you drink alcohol with Lumryz (sodium oxybate). It's also higher if you take other CNS depressants, like opioids and muscle relaxants. If you're worried about the risk of slowed breathing, speak to your prescriber.

          risk-warning

          Only available through the Lumyrz REMS program

          Lumryz (sodium oxybate) has a risk of misuse. It can also slow the body down and make your breathing extremely slow. Because of these risks, the FDA requires Lumryz (sodium oxybate) to be available only through a Risk Evaluation and Mitigation Strategies (REMS) program. This safety program is called the Lumyrz REMS program.

          Your prescriber will help you sign up for the Lumryz REMS program. Your prescriber and the pharmacy you get Lumryz (sodium oxybate) from must also enroll. This helps make sure you and everyone involved in your care understands the dangers of the medication.

          risk-warning

          Behavior changes, including depression and suicidal thoughts

          • Risk factors: History of mental health problems

            Some people taking Lumryz (sodium oxybate) can have changes in their behavior. In studies, this included confusion, anxiety, and irritability. Some also had panic attacks or had obsessive thoughts. Although rare, others might have signs of depression or thoughts of hurting themselves.

            Let your prescriber know if you have a history of mental health problems. They might want to follow up with you more often. They can make sure your mental health is okay while you're taking Lumryz (sodium oxybate).

            Tell your prescriber if you start to behave in ways that aren't normal for you or have signs of depression while taking Lumryz (sodium oxybate). If you start thinking about wanting to hurt yourself, call 911 right away.

            risk-warning

            Unusual sleep behaviors (e.g., sleepwalking)

            Sleepwalking and other unusual sleep behaviors can happen while taking took Lumryz (sodium oxybate). This can look like having confused behavior or wandering throughout the night. These sleep behaviors can raise the risk of hurting yourself by accident.

            Make sure your family and loved ones know about this side effect so they can watch out for your safety. Tell your prescriber if you've sleepwalked or wandered around at night while taking Lumryz (sodium oxybate). Also let them know about any other strange things you've done while you're sleeping during treatment.

            risk-warning

            Contains a high amount of sodium

            • Risk factors: Heart failure | High blood pressure | Kidney problems

              Lumryz (sodium oxybate) contains a high amount of sodium (salt). It can be dangerous to take for people who are sensitive to salt. This includes people with heart failure, high blood pressure, or kidney problems.

              Before starting Lumryz (sodium oxybate), tell your prescriber about your full medical history. They can make sure it's safe for you to take, given the high salt content in the medication.

              basics-icon

              What are the side effects of Lumryz (sodium oxybate)?

              The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

              Common Side Effects

              • Bedwetting (up to 9%)
              • Nausea (up to 8%)
              • Headache (up to 7%)
              • Dizziness (up to 6%)
              • Vomiting (up to 6%)

              Other Side Effects

              • Sleepiness
              • Poor appetite
              • Weight loss
              • Anxiety
              • Sleepwalking
              Note: Side effects were reported by adults. Side effects in children might be a little different.

              Serious Side Effects

              Contact your healthcare provider immediately if you experience any of the following.
              • Very slow breathing
              • Feeling overly sleepy
              • Fainting
              When do Lumryz (sodium oxybate) possible side effects begin and end?
              Time passed since treatment started:
              MINUTES
              HOURS
              DAYS
              WEEKS
              MONTHS
              Sleepiness
              Trouble thinking or focusing
              Risk of very slowed breathing
              Seek immediate medical care if you experience this side effect.
              If a line continues to the right, you'll likely keep experiencing this side effect once it starts.

              Source: DailyMed

              The following side effects have also been reported

              Side effects that you should report to your care team as soon as possible:

              • Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
              • CNS depression—slow or shallow breathing, shortness of breath, feeling faint, dizziness, confusion, trouble staying awake
              • Mood and behavior changes—anxiety, nervousness, confusion, hallucinations, irritability, hostility, thoughts of suicide or self-harm, worsening mood, feelings of depression
              • Sleep apnea—loud snoring, gasping or choking during sleep, daytime sleepiness
              • Sleepwalking

              Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):

              • Bedwetting
              • Dizziness
              • Headache
              • Loss of appetite
              • Nausea
              • Vomiting
              pros-and-cons

              Pros and cons of Lumryz (sodium oxybate)

              thumbs-up

              Pros

              Taken just once at bedtime each night (no need to wake up in the middle of the night for a second dose)

              Can okay for children 7 years and older with narcolepsy to take

              Becomes a liquid once mixed, so you don't need to swallow a pill

              thumbs-down

              Cons

              Need to mix the medication with water before taking

              Is a controlled substance, so there are special requirements to getting the medication filled

              Might not be the best option for people with liver problems

              pharmacist-tips

              Pharmacist tips for Lumryz (sodium oxybate)

              pharmacist
              • Take Lumryz (sodium oxybate) right before bed at your bedside each night. Make sure it's at least 2 hours after you've eaten so the medication works the best it can.

                • For each Lumryz (sodium oxybate) dose, you'll need to mix the powder from the packet with water before you take it. Don't take the medication without preparing it.

                  • Lumryz (sodium oxybate) can make you feel sleepy. It can also make it hard to think, pay attention, and react fast. These side effects can last for many hours. Don't drive or use machines until it's been at least 6 hours since you've taken the medication and you know how it affects you.

                    • Don't drink alcohol with Lumryz (sodium oxybate). It can raise your risk of serious side effects. This includes slowed breathing, loss of consciousness, or even death. Alcohol can also make the medication get released into the body too fast, which can be very dangerous. Talk to your prescriber if you need help to stop drinking.

                      How to prepare and take Lumryz (sodium oxybate):

                      • Prepare your Lumryz (sodium oxybate) dose before bedtime. Follow the instructions on how to prepare the medication. If you have any questions, ask your prescriber or pharmacist.

                        • How to prepare: Fill the provided mixing cup with water to the "A" line. Don't use household cups, and don't use hot water. Take 1 packet and pour all the powder from it into the cup. Close the cup and shake for at least a minute to mix well. The mixed liquid will look a little milky with some lumps. Drink the liquid within 30 minutes; don't save it after that.

                          • How to take: Drink the liquid within 30 minutes of mixing. Sit in bed to drink all the liquid in the cup. Refill to mixing cup with water to the line labeled "B." Mix any leftover medication that's still in the cup. Don't open another packet to pour into the cup. Close the cup and shake it for 10 seconds. Then, drink the liquid in the cup.

                            • Right after you take Lumryz (sodium oxybate), lie down in bed and stay in bed. This can help prevent you from falling and getting hurt. You'll probably fall asleep within 5 to 15 minutes after taking the medication. Keep in mind that the time it takes to fall asleep might be different from night to night.

                              • Leave the empty Lumryz (sodium oxybate) packet and mixing cup by the bed until morning. The next day, throw the used packet away in the trash (rinse any powder left down the sink first). Rinse the mixing cup with water and let it dry for next time.

                                faqs

                                Frequently asked questions about Lumryz (sodium oxybate)

                                What is the Lumryz REMS program?
                                The Lumryz REMS program is an extra safety requirement from the FDA. This medication has a risk of misuse. It can also slow your breathing, make you very sleepy, and make it hard to think, focus, and react. These risks can be very serious and dangerous. This Risk Evaluation and Mitigation Strategy (REMS) program makes sure that you and your care team understand the dangers of the medication. Your prescriber will help you enroll in the Lumryz REMS program. Your prescriber and the pharmacy you're getting the medication from will also need to enroll. If you have more questions about the Lumryz REMS program, ask your prescriber.
                                Is Lumryz (sodium oxybate) a controlled substance?
                                Yes. Lumryz (sodium oxybate) is a schedule 3 controlled substance because it has a risk of misuse. Misuse means taking the medication in a different way other than prescribed. Misuse can lead to serious and potentially life-threatening problems. This can include dangerously slow breathing and overdose. It can also sometimes lead to addiction. There are federal and state laws about how controlled substances like Lumryz (sodium oxybate) get prescribed and dispensed. Talk to your prescriber about these regulations and any questions you have. Also talk to them if you're worried about the risks that come with the medication.
                                How long does it take for Lumryz (sodium oxybate) to work?
                                It can take a few weeks to improve narcolepsy symptoms. In a study, adults had fewer cataplexy attacks after the first week of taking Lumryz (sodium oxybate). They had the fewest attacks after their dose changed to 9 grams per night. This was about 2 to 3 months after they started taking the medication. What's more, they felt less sleepy during the day over 3 months of treatment. Children also showed improvement after a few weeks of taking the medication. Note that some people were also taking other narcolepsy medications in these studies. Keep taking Lumryz (sodium oxybate) every night, even if you don't notice changes right away. This helps it work its best. If you have questions about how long Lumryz (sodium oxybate) is taking to work, talk to your prescriber.
                                How much sodium is in Lumryz (sodium oxybate)?
                                Lumryz (sodium oxybate) has a high amount of sodium (salt) in it. The exact amount depends on your dose. For example, 4.5 grams of medication each night contains 820 mg of sodium. And taking 6 grams of medication each night means you're getting 1,100 mg of sodium per night. Let your prescriber know if you have a medical condition that makes you sensitive to sodium. This can include heart failure, high blood pressure, or kidney problems. Too much sodium can be a problem for these people. Your prescriber can check that you can take Lumryz (sodium oxybate) in a safe way. Or, they might find a different option to help with your narcolepsy.
                                How does Lumryz (sodium oxybate) make you feel?
                                Lumryz (sodium oxybate) can make you feel dizzy, sleepy, or nauseous. Some people might also have a headache as a side effect. Always take the medication while sitting in bed and stay in bed after to avoid falls. Lumryz (sodium oxybate) can also make it hard to think and focus for several hours. So don't drive or do anything that needs your full attention until at least 6 hours after you take it and you know how it affects you. If these side effects bother you, talk to your prescriber. Also let them know right away if you have more serious side effects like slowed breathing and confusion.
                                Can you take Lumryz (sodium oxybate) while pregnant?
                                If you're pregnant or thinking about becoming pregnant, talk to your prescriber. They can help explain the risks and benefits of taking Lumryz (sodium oxybate). There isn't enough information to know if it's safe to take during pregnancy. Animal studies showed that the medication harmed unborn babies when given during pregnancy. This included stillbirths and growth problems. Your prescriber can help find the safest option for you.
                                What's the difference between Lumryz and Xyrem?
                                Lumryz and Xyrem are both medications that have sodium oxybate in them. They both help with cataplexy and excessive sleepiness during the day for people 7 years and older who have narcolepsy. But they're different in the way you take them. You take Xyrem twice each night, once at bedtime and then again 2.5 to 4 hours later. But for Lumryz, you take it just once at bedtime. So Lumryz might be a good option if you usually can't wake up for your second dose of Xyrem of the night. Also Xyrem is a liquid that you mix with water and you can prepare your doses up to 24 hours in advance. But Lumryz is a powder that you mix with water and then you have to drink within 30 minutes of mixing. Talk to your prescriber about how these medications compare and see which might be best for you.
                                GoodRxEducationalIcon

                                How to save using GoodRx

                                Compare Prices
                                1. Compare PricesSpecify your dosage and quantity to find out exactly how much you can save.
                                Select your free coupon
                                2. Select your free couponYou can use the displayed coupon, or compare prices at other pharmacies near you.
                                Show coupon to your pharmacist
                                3. Show coupon to your pharmacistPresent your printed or electronic coupon when you pick up your prescription.
                                Get free couponLearn more
                                dosage

                                Lumryz (sodium oxybate) dosage forms

                                Typical dosing for Lumryz (sodium oxybate)

                                • Adults: The typical starting dose is 4.5 grams by mouth once each night at bedtime. Your prescriber will raise your dose every week to the recommended dose. The recommended dose is 6 to 9 grams once per night.

                                • Children 7 years and older: The dose depends on your child's weight.

                                  • Weigh at least 99 lbs: The typical starting dose is 4.5 grams by mouth once each night at bedtime. The prescriber will raise the dose about every week. The highest recommended dose is 9 grams once each night.

                                  • Weigh 66 lbs to less than 99 lbs: Your child will likely need to start with Xyrem (sodium oxybate) first before switching to Lumryz (sodium oxybate). Then after the switch, the prescriber will adjust the dose. The highest recommended dose of Lumryz (sodium oxybate) is 7.5 grams by mouth once each night at bedtime.

                                  • Weigh 44 lbs to less than 66 lbs: Your child will likely need to start with Xyrem (sodium oxybate) first before switching to Lumryz (sodium oxybate). Then once switched, the prescriber will adjust the dose. The highest recommended dose of Lumryz (sodium oxybate) is 6 grams by mouth once each night at bedtime.

                                drug-cost

                                How much does Lumryz (sodium oxybate) cost?

                                To access savings, use a GoodRx coupon and pay just a fraction of the retail price.View prices & coupons
                                contraindications-icon

                                Lumryz (sodium oxybate) contraindications

                                Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Lumryz (sodium oxybate) will not be safe for you to take.
                                alternatives

                                What are alternatives to Lumryz (sodium oxybate)?

                                There are a number of medications that your doctor can prescribe in place of Lumryz (sodium oxybate). Compare a few possible alternatives below.
                                Lumryz (sodium oxybate)
                                Used for:
                                $10235.00 Lowest GoodRx priceView Prices
                                Used for:
                                $18967.37 Lowest GoodRx priceView Prices
                                Used for:
                                images

                                Lumryz (sodium oxybate) images

                                white - Lumryz 4.5g Extended-Release Granules for Suspension
                                This medicine is White Carton.white - Lumryz 4.5g Extended-Release Granules for Suspension

                                Get savings updates for Lumryz (sodium oxybate)

                                Receive price alerts, news, and other messages from GoodRx about Lumryz (sodium oxybate) and other healthcare topics and relevant savings offers.

                                By providing your email, you consent to receive marketing communications from GoodRx, which may include content and/or data related to men’s health, women's health, reproductive care, or sexual health. You agree to the GoodRx Terms of Use and acknowledge the Privacy Policy. You can unsubscribe at any time.

                                Browse medications

                                View All

                                Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.