Strictly follow all the instructions on the label and package of your hetlioz or tasimelteon medication. Notify your doctor all other conditions you have including allergies and all the medicines you are currently using.

How Does Hetlioz Work?

How Does Hetlioz Work?

Hetlioz or tasimelteon is a tranquilizer also known as hypnotic. Hetlioz or tasimelteon works by interfering with some elements in your body that assists in controlling your waking and sleeping cycle.

How Effective is Hetlioz?

Hetlioz is effectively utilized in treatment of non-24-hour sleep-wake problem. Hetlioz or tasimelteon can also be used in other areas not mentioned in this article.

Do not take hetlioz or tasimelteon when you are allergic to it. To be safe with Hetlioz, notify your doctor if you have:

  • Liver illness
  • If you smoke.

It is not established whether hetlioz or tasimelteon can hurt your unborn child (FDA pregnancy group C). Notify your doctor when pregnant or planning to become while taking hetlioz or tasimelteon.

It is not known whether hetlioz or tasimelteon passes into mother's milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a toddler.

How should You Use Hetlioz?

Use hetlioz or tasimelteon faithfully as your doctor has instructed. Strictly follow all the guidelines on the prescription label. Never use hetlioz in small or large quantities or for longer periods than advised.

  • Use hetlioz or tasimelteon prior to your usual bedtime, the same time every night.
  • Never open, break, crush or chew hetlioz or tasimelteon capsule. Take it whole.
  • For the best outcome, take hetlioz or tasimelteon on empty stomach.
  • Go straight to bed after taking hetlioz or tasimelteon.

It may take few weeks or months before improvement. Continue taking the medicine as advised and inform your doctor if symptoms persist.

What are the Side Effects of Hetlioz?

Get emergency help if you observe allergic response to hetlioz or tasimelteon; like swelling if your tongue or hives, breathing difficulty, throat, face, and lips.
Inform your doctor if you have burning pain when urinating. Side effects of hetlioz or tasimelteon are more common seen in elderly people. Common hetlioz or tasimelteon side effects are:

  • Drowsiness,
  • Weird dreams,
  • Headache,
  • Nightmares,
  • Signs of cold like sore throat, blocked nose and sneezing.

What Other Drugs Can Affect Hetlioz?

Using hetlioz or tasimelteon with other medicines concurrently may escalate the effects. Notify your doctor before using drugs such as sleeping pills, muscle relaxers, narcotic pain drugs or medications for depression, seizure or anxiety.

Inform your doctor of all other drugs you stopped or you are still using during hetlioz or tasimelteon treatment, particularly:

  • Ciprofloxacin
  • Enzalutamide
  • Fluvoxamine
  • St. John's Wort
  • Rifampin
  • Mitotane
  • Seizure medications such as phenytoin, fosphenytoin, carbamazepine and phenobarbital.

Written, Edited or Reviewed By:


Last Modified On: July 27, 2017

Pain Assist Inc.

Pramod Kerkar
  Note: Information provided is not a substitute for physician, hospital or any form of medical care. Examination and Investigation is necessary for correct diagnosis.

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