Hetlioz

(tasimelteon)

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Keeps the sleep cycle normal for completely blind people who aren't able to see light.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

Hetlioz (tasimelteon) is the only approved medicine to help completely blind people who are unable to see light maintain regular sleep cycles. It is only available as a brand name, so it can be expensive.

Lowest price near you
  • Lowest price with coupon
    $14445.07
Quick facts about Hetlioz
  • Drug class: Neuro/psych
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Upsides

  • Hetlioz (tasimelteon) is not addictive.
  • Hetlioz (tasimelteon) is the only drug that's approved to help people unable to see light to have regular sleep cycles.
  • If you have to stop taking Hetlioz (tasimelteon) suddenly, you're not likely to have withdrawal.
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What to expect from Hetlioz, on one page

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Downsides

  • Hetlioz (tasimelteon) can take weeks to months for you to notice any effect.
  • Hetlioz (tasimelteon) is only available as a brand name so it can be expensive.
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What to expect from Hetlioz, on one page

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How it works

Hetlioz (tasimelteon) is a melatonin receptor agonist. It helps you to sleep at night and stay awake during the day.

Quick facts about Hetlioz
  • Drug class: Neuro/psych
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Used for

  • Non-24 hour sleep-wake cycle

Dosage forms

  • Pill
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Prices and coupons

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What to expect when you take Hetlioz (tasimelteon) for Non-24 hour sleep wake cycle

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Possible side effects
  • Headache
  • Nightmares or abnormal dreams
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Side effect rates for Hetlioz (tasimelteon)

From 84 clinical trials of Hetlioz when taken for non-24 hour sleep wake disorder
  • Headache
    17%17%
    7%7%
  • Abnormal liver tests
    10%10%
    5%5%
  • Nightmares or abnormal dreams
    10%10%
  • Common cold or flu
    7%7%
  • Urinary tract infection
    7%7%
    2%2%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Hetlioz.

Hetlioz (tasimelteon)
Placebo

People taking Hetlioz felt side effect more

People taking Hetlioz felt side effect less

No difference

Risks and Warnings for Hetlioz (tasimelteon)

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  • Don't take Hetlioz (tasimelteon) unless you're planning to sleep, since it can make you sleepy and less able to concentrate.

Common concerns from people taking Hetlioz (tasimelteon)

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Sleep
  • If you go to sleep at a different time, don't take Hetlioz (tasimelteon).