Content reviewed by the PillRelax Healthcare Team | Last reviewed: September 2026
If you have been prescribed Zopiclone for insomnia, one of the most common questions is how quickly it takes effect.
How Long Does Zopiclone Take to Work?
Zopiclone typically begins working within 30 to 60 minutes of taking an oral tablet. Most people feel noticeable sedation within 45 minutes. Take it immediately before getting into bed.
Factors That Affect Onset Time
- Food: Taking Zopiclone after a heavy meal may delay absorption
- Age: Older adults may experience a faster and stronger response
- Body weight and metabolism: Individual variation in CYP3A4 enzyme activity affects metabolism
- Other medicines: CYP3A4 inhibitors can increase Zopiclone plasma levels
How Long Does Zopiclone Last?
Sedative effects typically last for 6 to 8 hours. Its plasma half-life is approximately 5-6 hours, designed to cover a full night’s sleep without significant next-day drowsiness at the standard dose.
When Should I Take Zopiclone?
Take Zopiclone immediately before bed and only when you can get a full 7-8 hours of uninterrupted sleep. Do not take it more than once per night, if you need to be alert within 8 hours, with alcohol, or before driving.
Frequently Asked Questions
Why isn’t my Zopiclone working?
Tolerance can develop with continued use. If this occurs, do not increase your dose without medical advice.
Is it safe to take Zopiclone every night?
Daily use is not recommended beyond 2-4 weeks due to tolerance and dependence risk. Some GPs prescribe it on alternating nights to reduce these risks.
