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Lemborexant (By mouth)

Lemborexant (lem-boe-REX-ant)

Treats insomnia (trouble sleeping).

Brand Name(s):

Dayvigo

There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

This medicine is not right for everyone. Do not use it if you had an allergic reaction to lemborexant, or if you have narcolepsy (uncontrollable desire for sleep or a sudden attack of deep sleep).

How to Use This Medicine:

Tablet

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
  • You should not take this medicine if you are not able to sleep or rest for at least 7 hours before you need to be active again.
  • This medicine works better if you do not take it with food or right after a meal.
  • This medicine should come with a Medication Guide. Ask your pharmacist for a copy if you do not have one.
  • This medicine is used only when you cannot sleep. You do not need to take it on a regular schedule.
  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Some medicines can affect how lemborexant works. Tell your doctor if you are using any of the following:
    • Bosentan, bupropion, carbamazepine, chlorzoxazone, clarithromycin, efavirenz, etravirine, fluconazole, itraconazole, methadone, modafinil, ranitidine, rifampin, St John's wort, or verapamil
    • Benzodiazepine medicine
    • Medicine to treat depression
  • Do not drink alcohol while you are using this medicine.
  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

Warnings While Using This Medicine:

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, breathing or lung problems (including COPD, sleep apnea), or muscle problems or weakness. Tell your doctor if you have a history of alcohol or drug addiction, depression, or mental health problems.
  • This medicine may cause the following problems:
    • Unusual changes in mood or behavior
    • Sleep paralysis (while you are going to sleep or waking up)
  • This medicine may make you drowsy the next morning. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
  • This medicine may cause you to do things while you are still asleep, including sleepwalking, driving, having sex, making phone calls, or preparing and eating food. You may not remember doing these things the next morning. Tell your doctor right away if you learn that this has happened.
  • Call your doctor if you still have trouble sleeping after using this medicine for 7 to 10 days.
  • This medicine can be habit-forming. Do not use more than your prescribed dose. Call your doctor if you think your medicine is not working.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Anxiety, depression, nervousness, unusual behavior, or thoughts of hurting yourself
  • Seeing, hearing, or feeling things that are not there
  • Severe confusion, severe drowsiness, muscle weakness
  • Temporary inability to move or talk while you are going to sleep or waking up

If you notice these less serious side effects, talk with your doctor:

  • Daytime drowsiness

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Last Updated: 12/4/2023

 

 
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