eszopiclone vs zaleplon
Side-by-side comparison of eszopiclone and zaleplon Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Lunesta
Sonata
Eszopiclone (Lunesta) is a medicine that helps you fall asleep and stay asleep. It is used to treat insomnia.
Zaleplon (Sonata) is a medicine that helps you fall asleep faster. It is used for short-term treatment of insomnia.
Eszopiclone is used to treat insomnia, which means you have trouble falling asleep or staying asleep. It can help you fall asleep faster and stay asleep longer. Studies have shown it works for up to 6 months.
Zaleplon is used to treat insomnia, which means you have trouble falling asleep. It can help you fall asleep faster for up to 30 days. However, it does not increase the total time you sleep or decrease the number of times you wake up during the night.
Eszopiclone works by slowing down activity in your brain. This helps you relax and fall asleep. It affects certain chemicals in your brain that regulate sleep.
Zaleplon is a non-benzodiazepine hypnotic. It works by slowing activity in the brain to allow sleep. It affects certain brain chemicals to help you fall asleep.
- • Unpleasant taste
- • Headache
- • Feeling sleepy
- • Respiratory infection
- • Dizziness
- • Headache
- • Dizziness
- • Somnolence (sleepiness)
- The medicine is not working 4,824
- Trouble sleeping 3,890
- Bad taste in mouth 3,853
- Feeling sick to your stomach 1,383
- Waking up in the middle of the night 1,213
- The medicine is not working 140
- Feeling sick to your stomach 111
- Killed themselves 88
- Trouble sleeping 80
- Pain in your head 79
Eszopiclone can cause complex sleep behaviors like sleepwalking, sleep driving, and doing other activities while not fully awake. Some of these can lead to serious injuries or even death. Stop taking eszopiclone right away if this happens.
Zaleplon can cause complex sleep behaviors like sleepwalking, sleep-driving, and doing other activities while not fully awake. Some of these activities can result in serious injuries or even death. Stop taking zaleplon immediately and call your doctor if you experience any of these behaviors. Zaleplon can be habit-forming. Keep it in a safe place to prevent misuse.
It is not known if eszopiclone can harm your unborn baby. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
It is not known if zaleplon can harm your unborn baby. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
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How to Read This eszopiclone vs zaleplon Comparison
eszopiclone is classified in the Non-Benzodiazepine Hypnotic (Z-Drug) drug class, while zaleplon sits within the Non-Benzodiazepine Hypnotic (Z-Drug) class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, eszopiclone has 15,163 submissions while zaleplon has 498. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between eszopiclone and zaleplon — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.