Zopiclone
Medication
non-benzodiazepine hypnotic
mental health
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Prescribed short-term for insomnia
When to take
NHS: just before bed · starts working in 30–60 minutes
Take with
HealthHub: with or without food · NHS: no alcohol
Pros & cons
Pros
- NHS: a z-drug hypnotic for short-term insomnia
- SG imovane label: one 7.5 mg tablet, not to be exceeded
- HealthHub: most side effects improve with time
Cons
- NHS: next-day sleepiness — no driving for 12 hours
- HealthHub: habit-forming; withdrawal if stopped fast
- NHS: sleepwalking and other complex sleep behaviours
Sources
- HSA — Listing of Registered Therapeutic Products (data.gov.sg open dataset, 5,511 rows, cached locally at /tmp/hsa_all.json and filtered locally, not re-fetched) · read 2026-08-27
what it says
“All 3 registered zopiclone products carry Forensicclassification 'Prescription Only' — SIN05047P IMOVANE TABLET 7.5 mg · SIN09355P APO-ZOPICLONE TABLET 7.5 mg · SIN11416P ZOPICLONE TABLET 7.5 mg (ATC N05CF01)”
- Singapore National Drug Formulary — IMOVANE TABLET 7.5 MG [SIN05047P], Product Info and Indication · read 2026-08-27
what it says
“Forensic Classification PRESCRIPTION ONLY MEDICINES … IMOVANE is intended for treatment of short-term treatment of insomnia in adults (including difficulties with falling asleep, nocturnal awakening, and early wakening).”
- Singapore National Drug Formulary — IMOVANE [SIN05047P], Dosage and method of administration · read 2026-08-27
what it says
“Adults: the recommended dose is one 7.5 mg IMOVANE tablet by oral route. This dose should not be exceeded … should be taken in a single intake and not be re-administered during the same night.”
- Singapore National Drug Formulary — IMOVANE [SIN05047P], Treatment duration and special populations · read 2026-08-27
what it says
“Treatment should be as short as possible and should not exceed four weeks including the period of tapering off … In elderly and in patients with impaired liver function or chronic respiratory insufficiency: a starting dose of 3.75 mg”
- Singapore National Drug Formulary — IMOVANE [SIN05047P], Contraindications · read 2026-08-27
what it says
“IMOVANE is contraindicated in patients: With myasthenia gravis … With respiratory failure … With severe sleep apnea syndrome … With severe hepatic insufficiency … Who have previously experienced complex sleep behaviors after taking IMOVANE”
- NHS — Zopiclone: what zopiclone is for, how to take zopiclone · read 2026-08-27
what it says
“Zopiclone is used as a short-term treatment for sleeping problems (insomnia) … It's a type of sleeping pill that's sometimes known as a Z-drug. These are a kind of medicine called a hypnotic”
- NHS — Zopiclone: how to take zopiclone · read 2026-08-27
what it says
“Zopiclone comes as tablets you swallow once a day, before you go to bed. It takes around 30 to 60 minutes to start working … Treatment with zopiclone usually lasts from a few days to a few weeks.”
- NHS — Zopiclone: common side effects · read 2026-08-27
what it says
“Common side effects of zopiclone include: dry mouth … a bitter or metallic taste … feeling tired, sleepy, dazed or less alert the next day. Do not drive, ride a bike or use machinery for 12 hours after taking zopiclone.”
- NHS — Zopiclone: serious side effects · read 2026-08-27
what it says
“Possible serious side effects of zopiclone include: difficulty breathing … sleepwalking, or doing things while not fully awake, like eating, talking on the phone or driving … hallucinations … thoughts of suicide or harming yourself”
- NHS — Zopiclone: who can and cannot take zopiclone · read 2026-08-27
what it says
“it may not be suitable if: … you have sleep apnoea or breathing problems … you have liver problems … you've been addicted to alcohol, drugs or prescription medicine before, especially opioids”
- NHS — Zopiclone: taking zopiclone with other medicines, food and drink · read 2026-08-27
what it says
“These include some: other medicines for sleep or anxiety problems … opioid painkillers like codeine, morphine or oxycodone … antipsychotics … antidepressants … sedating antihistamines … antibiotics, such as clarithromycin or erythromycin”
- NHS — Zopiclone: food, drink and alcohol with zopiclone · read 2026-08-27
what it says
“Do not drink alcohol while taking zopiclone. Alcohol can increase the effects of the medicine, which can cause breathing problems and make it very difficult to wake up.”
- HealthHub (Pharmaceutical Society of Singapore) — Zopiclone: how should I take or use this medication · read 2026-08-27
what it says
“This medication may be taken with or without food. This medication should be taken just before going to bed when you are ready to sleep. You should obtain this medication from the same doctor or clinic whenever possible.”
- HealthHub — Zopiclone: precautions (dependence and withdrawal) · read 2026-08-27
what it says
“This medication may be habit-forming when taken excessively or for a prolonged duration … do not stop taking it abruptly as it may lead to withdrawal symptoms such as increased sweating, increased heart rate, tremors”
- HealthHub — Zopiclone: common side effects · read 2026-08-27
what it says
“Most of the side effects listed here will improve with time. Speak with your doctor if any of them continues, worsens or affects your daily life.”
- HealthHub — Zopiclone: what food or medication should I avoid · read 2026-08-27
what it says
“Avoid drinking alcohol while taking Zopiclone as it can cause excessive sleepiness.”
Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.