Zolpidem Tablets (Stilnoct): Uses, Dosage, Side Effects
Short-term treatment for insomnia: dosage, side effects, precautions, and essential safety information for zolpidem (Stilnoct).
Zolpidem is a medication prescribed for the short-term treatment of insomnia, particularly when individuals struggle to fall asleep. Available as Stilnoct tablets, it belongs to a class of drugs known as non-benzodiazepine hypnotics or ‘Z-drugs’ that help induce sleep by acting on the brain’s GABA receptors.
About 1 in 3 adults experience insomnia symptoms at some point, making treatments like zolpidem valuable for temporary relief. However, it is not intended for long-term use due to risks of tolerance, dependence, and reduced effectiveness over time.
About zolpidem tablets
Zolpidem tartrate, marketed as Stilnoct, is a sedative-hypnotic agent that mimics the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that calms brain activity. It primarily targets sleep initiation rather than maintenance, reducing the time to fall asleep (sleep latency) by up to 15-30 minutes in clinical studies.
Unlike benzodiazepines, zolpidem has a shorter half-life (approximately 2.5 hours), minimizing daytime hangover effects when used correctly. It is available in immediate-release (5mg or 10mg) and prolonged-release formulations (6.25mg or 12.5mg), with the latter designed for sleep maintenance.
Clinical evidence from sources like DrugBank and NCBI StatPearls confirms zolpidem improves sleep onset and duration in transient insomnia without significantly altering sleep architecture. However, efficacy diminishes after 2-4 weeks, prompting guidelines to limit use to this period.
Before taking zolpidem
Before starting zolpidem, consult your doctor to ensure it is safe, as certain conditions and medications can interact adversely. Key considerations include:
- Pregnancy and breastfeeding: Zolpidem crosses the placenta and may cause neonatal withdrawal or respiratory depression. It is not recommended during pregnancy (especially third trimester) or breastfeeding.
- Respiratory issues: Avoid if you have sleep apnoea, chronic obstructive pulmonary disease (COPD), or other breathing problems, as it can suppress respiration.
- Muscle weakness: Contraindicated in myasthenia gravis or conditions causing respiratory muscle weakness.
- Addiction history: High risk of abuse in those with drug/alcohol dependence; use lowest dose possible.
- Mental health: May worsen depression or unmask psychiatric issues; monitor closely.
- Liver/kidney impairment: Reduced metabolism requires dose adjustment (e.g., 5mg start).
- Allergies: Hypersensitivity to zolpidem or excipients prohibits use.
- Other medicines: Inform your doctor of all prescriptions, over-the-counter drugs, herbals (e.g., St John’s wort), or alcohol.
Additionally, zolpidem is contraindicated in severe hepatic insufficiency, acute respiratory failure, and history of complex sleep behaviors like sleepwalking.
How to take zolpidem
Follow your doctor’s instructions and read the patient information leaflet (PIL) carefully. Standard guidelines are:
- Dosage: Adults under 65: 10mg immediate-release or 12.5mg prolonged-release once nightly. Over 65, debilitated, or hepatic impairment: start at 5mg or 6.25mg.
- Timing: Take immediately before bed, ensuring 7-8 hours of sleep opportunity. Swallow whole; do not crush or chew prolonged-release tablets.
- Frequency: One dose per night only; no redosing.
| Patient Group | Recommended Dose | Formulation |
|---|---|---|
| Adults <65 years | 10mg or 12.5mg | Immediate or prolonged-release |
| Elderly (≥65), debilitated | 5mg or 6.25mg | Immediate or prolonged-release |
| Hepatic impairment | 5mg or 6.25mg | Immediate or prolonged-release |
Adjust doses based on response, using the lowest effective amount. Treatment duration: 2-4 weeks maximum.
Getting the most from your treatment
To optimize benefits and minimize risks:
- Limit duration: Stop after 4 weeks or as advised to prevent tolerance and dependence.
- Next-day impairment: Plan for 8+ hours sleep; avoid driving or machinery if drowsy.
- Avoid alcohol/CNS depressants: Increases sedation, amnesia, and complex behaviors (e.g., sleep-driving).
- Good sleep hygiene: Combine with habits like consistent bedtime, dark room, no screens.
- Taper if needed: Gradual reduction prevents rebound insomnia.
If insomnia persists beyond 7-14 days, re-evaluate for underlying causes like depression or sleep disorders.
Possible side effects
Like all medicines, zolpidem can cause side effects, though not everyone experiences them. Report severe or persistent issues to your doctor.
Common side effects (affecting more than 1 in 100 people):
- Somnolence, dizziness, headache.
- Drowsiness next day, reduced alertness.
Serious side effects (uncommon/rare):
- Complex sleep behaviors: Sleepwalking, sleep-driving, preparing food without memory. Seek immediate medical help.
- Amnesia, hallucinations, depression.
- Respiratory depression, falls (especially elderly).
- QT prolongation risk in susceptible patients.
| Side Effect | Frequency | What to Do |
|---|---|---|
| Sleepiness/dizziness | Common | Avoid driving; wait until normal |
| Headache/back pain | Common | Paracetamol; see doctor if persists |
| Sleepwalking/amnesia | Uncommon | Stop medicine; contact doctor urgently |
| Falls/gait disturbance | Rare (elderly) | Supervise; review dose |
Overdose symptoms include coma, especially with alcohol/CNS drugs; seek emergency care.
How to cope with side effects
- Drowsiness: Ensure full night’s sleep; avoid activities requiring alertness.
- Headache: Hydrate, use OTC painkillers; consult pharmacist.
- Dizziness: Rise slowly from sitting/lying.
- Memory issues: Note behaviors; discontinue if occur.
Frequently Asked Questions (FAQs)
Q: How long can I take zolpidem?
A: Maximum 2-4 weeks; longer use risks dependence and reduced efficacy.
Q: Can I drink alcohol with zolpidem?
A: No, it greatly increases side effects like sedation and sleepwalking.
Q: Is zolpidem safe for elderly patients?
A: Use lower dose (5mg); higher fall and confusion risk.
Q: What if I forget a dose?
A: Do not take late; skip and resume next night.
Q: Does zolpidem cause addiction?
A: Possible with prolonged use, especially in addiction history; taper off.
Who can and cannot take zolpidem tablets
Cannot take if: hypersensitivity, severe liver disease, respiratory failure, complex sleep behavior history. Use caution in elderly, depression, addiction.
Pregnancy, breastfeeding and fertility while taking zolpidem tablets
Avoid in pregnancy (FDA Category C/D); limited data shows risks. Not advised breastfeeding; pump and discard. No fertility impact known.
Other medicines, food and drink with zolpidem – can I take it with others
Interactions: Strong CYP3A4 inhibitors (e.g., ketoconazole) increase levels; avoid with opioids, alcohol, other hypnotics. Food delays absorption.
Dosage for zolpidem
As per table above; do not exceed recommended.
Common questions about zolpidem
How addictive? Moderate risk short-term. Alternatives? CBT-I preferred long-term. Driving? No if impaired.
References
- Zolpidem tablets – Stilnoct — Patient.info. 2023. https://patient.info/medicine/zolpidem-tablets-stilnoct
- STILNOCT® Product Information — Sanofi. 2023. https://www.sanofi.com/assets/countries/india/docs/science-and-innovation/for-healthcare-professionals/product-information/pharmaceuticals/stilnoct-pi.pdf
- Stilnoct API Safety Information — Sanofi Campus. 2023. https://www.campus.sanofi/dam/jcr:b49cbe81-e795-4628-be20-69a80e1b0e5b/Stilnoct-API.pdf
- Zolpidem: Uses, Interactions, Mechanism — DrugBank (Government of Canada). 2025-01-10. https://go.drugbank.com/drugs/DB00425
- Zolpidem (oral route) — Mayo Clinic. 2024. https://www.mayoclinic.org/drugs-supplements/zolpidem-oral-route/description/drg-20061195
- How and when to take zolpidem — NHS. 2024. https://www.nhs.uk/medicines/zolpidem/how-and-when-to-take-zolpidem/
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