Zolpidem — NZ Medication Guide
📋 Reviewed by a Registered Pharmacist NZ — This information is for general educational purposes only and does not replace professional medical advice. Always consult your doctor or pharmacist before starting, stopping, or changing any medication.
What is Zolpidem?
Zolpidem is a non-benzodiazepine (“Z-drug”) short-acting hypnotic used for the short-term treatment of insomnia. This medication is zolpidem is available in some countries but zopiclone is the primary funded Z-drug in New Zealand.
What is Zolpidem Used For?
Zolpidem is used for short-term management of insomnia characterised by difficulty falling asleep (sleep onset insomnia). Due to its short half-life (approximately 2–3 hours), it is particularly suited for sleep onset rather than sleep maintenance.
How Does Zolpidem Work?
Zolpidem selectively enhances GABA-A receptor activity at the BZ1 receptor subtype, promoting sleep onset with less anxiolytic and muscle-relaxant effect than traditional benzodiazepines. Its short half-life reduces next-day hangover compared to longer-acting hypnotics.
How to Take Zolpidem
Taken as a single 10 mg tablet (5 mg in elderly, women, or hepatic impairment) immediately before sleep. Only when able to devote at least 7–8 hours to sleep. Maximum 2–4 weeks of continuous use. Not currently available in NZ under this name — check availability.
Common Side Effects of Zolpidem
- Drowsiness
- Headache
- Dizziness
- Anterograde amnesia
- Nausea
Serious Side Effects — Seek Medical Attention
Contact your doctor or call 111 immediately if you experience any of the following:
- Dependence and withdrawal
- Complex sleep behaviours (sleep-walking, sleep-driving — particularly with higher doses or alcohol)
- Respiratory depression (with CNS depressants)
- Paradoxical agitation
Drug Interactions
Zolpidem may interact with other medicines. Always inform your doctor and pharmacist of all medications you are taking. Key interactions include:
- Alcohol and CNS depressants (additive sedation — contraindicated with alcohol)
- CYP3A4 inhibitors (increase levels)
- Rifampicin (reduce levels)
New Zealand Prescribing Information
Zolpidem is widely used internationally but in New Zealand, zopiclone (3.75 mg and 7.5 mg tablets) is the primary funded non-benzodiazepine hypnotic. Zolpidem may be available through specialist prescription for certain patients. The principles of short-term use, lowest effective dose, and CBT-I as first-line treatment apply equally.
Frequently Asked Questions
Is zolpidem available in New Zealand?
Zopiclone is the main funded non-benzodiazepine hypnotic in New Zealand. Zolpidem may be available on specialist prescription but is not routinely stocked. If you have been prescribed zolpidem (e.g., from overseas), speak to your NZ GP or pharmacist about equivalent NZ-available options.
Can I take a Z-drug with alcohol?
No — combining Z-drugs (including zolpidem and zopiclone) with alcohol is dangerous. Alcohol significantly potentiates the sedative effects and can cause severe respiratory depression, complex sleep behaviours (sleep-driving, sleep-cooking), and memory blackouts. Never combine these.
⚠️ Disclaimer: This page is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or a qualified health provider. In New Zealand, medication availability and funding may vary — check with Pharmac or your pharmacist for current information.
Reviewed by a Registered Pharmacist NZ
References & Further Information
The following New Zealand and international resources were used to inform this page: