Zopiclone (often misspelled as “Zopiclon”) is a non-benzodiazepine hypnotic (commonly called a “Z-drug”) used short-term to treat insomnia in adults. The 7.5 mg dose is the standard adult dose. Here’s a factual breakdown based on medical guidelines (e.g., from FDA, EMA, and sources like Drugs.com, Medscape, and British National Formulary):

Key Uses

• Helps initiate and maintain sleep in people with severe sleep disturbances.
• Not for long-term use: Recommended for max 2–4 weeks to avoid dependence. Not for chronic insomnia without addressing underlying causes.

How It Works

• Enhances GABA (a brain chemical that calms activity) via the GABA-A receptor, similar to benzodiazepines but more selective for sleep.
• Onset: 30–60 minutes. Peak effect: 1–2 hours. Duration: 6–8 hours (may cause next-day drowsiness).

Dosage Guidelines

• Missed dose: Skip if not bedtime; don’t double up.
• Overdose: Seek emergency help (symptoms: extreme drowsiness, coma). Naloxone not effective; supportive care required.

Common Side Effects (affect >1 in 10 people)

• Bitter/metallic taste (up to 1 in 3 users).
• Dry mouth, drowsiness, dizziness.

Serious Side Effects (rare but seek medical help)

Interactions & Warnings

• Avoid with: Alcohol (dangerous sedation), opioids (respiratory depression), other CNS depressants (e.g., benzodiazepines), CYP3A4 inhibitors (e.g., ketoconazole increases levels).
• Contraindications: Myasthenia gravis, severe respiratory failure, sleep apnea, pregnancy (category C; risk of floppy infant syndrome), breastfeeding.
• Tolerance builds quickly: Effectiveness drops after 1–2 weeks.
• Driving: Don’t drive until you know effects (residual impairment common next day).

Evidence & Effectiveness

• Meta-analyses (e.g., Cochrane Review 2018): Reduces time to sleep onset by ~20 minutes vs. placebo, but benefits wane quickly. No strong evidence for long-term use.
• Alternatives: CBT-I (first-line, non-drug), melatonin, or other hypnotics like zolpidem (similar profile).