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Hetlioz LQ

Brand names: Hetlioz and HetliozLQ
Drug class: Other anxiolytics (sedatives, hypnotics)

What is Hetlioz LQ?

Hetlioz is a sedative used to treat adults with a non-24-hour sleep-wake problem.Hetlioz is also used for treating nighttime sleep disorders in people who have a genetic disorder known as Smith-Magenis syndrome. The capsule form tasimelteon can be used by people with SMS over 16 years of age. Oral suspension (liquid form) is recommended for children aged 3–15 years with SMS.Hetlioz LQ can be used in other ways not mentioned in this guide.

Side effects of Hetlioz LQ

If you experience any of the following symptoms of an allergic reaction, seek immediate medical attention: hives, difficulty breathing, swelling of the face, lips, or throat.If you experience pain or burning while urinating, call your doctor immediately.Older adults may experience more side effects.

Hetlioz LQ can cause the following side effects:

  • Headache;
  • Abnormal liver function tests
  • Strange dreams, nightmares,
  • Cold symptoms like a stuffy nose and sneezing.

There may be other side effects. For medical advice on side effects, call your doctor. Reaching out to the FDA to report side effects can be done at 1-800-FDA-1088.


Do not use it other than as directed. Inform your doctor of any other medications you are taking or if you have allergies or other medical conditions.

Before you take this drug

Tell your doctor about any of the following:

  • Liver disease
  • If you smoke.

Inform your physician immediately if you are pregnant or nursing.Hetlioz LQ should not be given to children without medical advice. Hetlioz LQ can only treat nighttime sleeping problems in SMS-positive children over 3 years of age. This medicine has not been approved for the treatment of non-24-hour sleep or wake disorders in children younger than 18 years.

How to take Hetlioz LQ?

Read all instructions or guides that come with your medication and follow all directions. Follow the directions on the label.Take your medicine at the same time every night, one hour before you normally go to bed.Please read and follow the instructions for use. If you need assistance, ask your doctor or pharmacist. Hetlioz LQ should not be used by a child under the age of 12 without adult supervision.Do not open, crush, chew or break the capsule.Hetlioz capsules can only be used by people aged 16 and over. This medicine is only for children aged 3–15 years.

Before measuring a dose, shake the orally dispersible suspension vigorously for 30 seconds. Use the supplied syringe or a dosing device (not your kitchen spoon). The syringe connector should not be removed from the neck of the bottle. After each use, cap the bottle and place it in the refrigerator.There is a difference between liquid and capsules. Use only the medication form prescribed by your doctor to avoid any mistakes.Weight is used to determine the dose for children. If your child loses or gains weight, the dose may change.This medicine may take several weeks or even months to fully work.Store capsules away from moisture, light, and heat at room temperature.Keep the liquid medication in the fridge. Any leftover liquid should be thrown away 5 weeks after the 48 mL or 8 weeks after the 158 mL bottles have been opened.

What happens if I miss the dose?

If you are unable to take the medication at the usual time, skip the dose.Use only one dose at a time.

What happens if I overdose?

Call 1-800-222-1222 immediately if you suspect a poison exposure and seek immediate medical care.

What should be avoided?

After taking Hetlioz, do not do anything but get ready for bed.

Interaction with other drug

Hetlioz can make you more drowsy when combined with other drugs. Before taking an opioid, sleeping pill, muscle relaxer, or medicine to treat anxiety or seizures, consult your doctor.It is sometimes not a good idea to take certain medications together. Some drugs may affect the blood levels of drugs that you are taking, which can increase side effects and make them less effective.Hetlioz LQ may be affected by other drugs, such as prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor of all the other medications you take.