Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Lunesta (eszopiclone) and Hetlioz (tasimelteon) are both used to help with sleep, but they work in different ways and are used for different conditions. Lunesta is a sedative-hypnotic that helps you fall asleep faster and stay asleep longer. It is a controlled substance and can be habit-forming. You take it right before bedtime, and it starts working quickly. Common side effects include a bad taste in your mouth and headaches. On the other hand, Hetlioz is a melatonin receptor agonist that helps regulate your sleep cycle, especially if you are totally blind or have Smith-Magenis Syndrome, known health conditions to have problems with ciracadian rhythms. It is not a controlled substance and is not habit-forming. You need to take it at the same time every night on an empty stomach, and it can take weeks or months to notice an effect. Common side effects include headaches and abnormal liver tests. Both medications are available as generics.
Lunesta (eszopiclone)
Tasimelteon (Hetlioz)
Lunesta (eszopiclone)
Tasimelteon (Hetlioz)
Summary of Lunesta vs. Hetlioz
Summary for Sedative-hypnotic
Prescription only
Lunesta (eszopiclone) is used to treat insomnia in people over the age of 18. This medication can help you fall asleep faster and wake up fewer times during the night. Lunesta (eszopiclone) belongs to a drug class called sedative-hypnotics, and it's a controlled substance so there are restrictions on how it can be filled and refilled at the pharmacy. You typically only need to take a dose right before bedtime, but it can cause a headache or leave a bad taste in your mouth as a side effect.
Summary for Melatonin receptor agonist
Prescription only
Tasimelteon (Hetlioz) is a prescription medication that treats specific sleep problems, including non-24-hour sleep-wake disorder (non-24) in adults and sleep disturbances in both children and adults with Smith-Magenis Syndrome (SMS). It comes as capsules for adults and a liquid suspension for children. The dosage is typically taken by mouth at the same time every night, about 1 hour before bed. Tasimelteon (Hetlioz) can potentially interact with many medications. Common side effects include headache and nightmares or unusual dreams.