Standard Dose for Temazepam
The standard adult dose of temazepam for insomnia is 15 mg taken 30 minutes before bedtime. 1, 2
Dosing Algorithm
Initial Dosing
- Standard adults: Start with 15 mg at bedtime 2
- Elderly or debilitated patients: Start with 7.5 mg at bedtime 2
- Transient insomnia: 7.5 mg may be sufficient to improve sleep latency 2, 3
Dose Adjustment
- Some patients may require 30 mg if 15 mg is insufficient 2
- The FDA-approved dosing range is 7.5-30 mg 2
- Dose should be taken 30 minutes before retiring 2
Evidence Base
The 2017 American Academy of Sleep Medicine clinical practice guideline specifically recommends temazepam based on trials using 15 mg doses for both sleep onset and sleep maintenance insomnia 1. This represents a WEAK recommendation with moderate quality evidence showing benefits outweigh harms 1.
Key Supporting Data
The guideline's meta-analysis of temazepam 15 mg demonstrated:
- Clinically significant reduction in subjective sleep latency 1
- Clinically significant improvement in total sleep time 1
- Significant reduction in wake after sleep onset (based on limited data) 1
- Minimal treatment-emergent adverse events 1
While temazepam 30 mg showed efficacy in individual studies, meta-analysis was only possible for the 15 mg dose, making it the evidence-based standard 1.
Important Clinical Considerations
Pharmacokinetics
- Peak plasma levels occur at 1.2-1.6 hours after dosing 2
- Half-life of 10-15 hours 4
- Steady-state achieved by the third dose 2
- No evidence of enzyme induction with chronic use 2
Safety Profile
Temazepam demonstrates a favorable safety profile in older adults over 8 weeks of treatment, with adverse effects being infrequent (7.8% of patients), mild in severity, and decreasing over time 5. However, recent pharmacovigilance data identified potential signals for ocular toxicities (eye irritation, increased intraocular pressure, glaucoma), behavioral effects (aggression, amnesia), and parasomnias (nightmares, somnambulism) that warrant monitoring 6.
Tapering for Discontinuation
To reduce withdrawal risk, use gradual taper when discontinuing. If withdrawal reactions develop, pause the taper or increase to the previous dose level, then decrease more slowly 2.
Common Pitfall
Unlike faster-acting Z-drugs, temazepam's slower absorption (peak at 1.5 hours) means it may be less effective for sleep onset compared to sleep maintenance 4. For patients with predominantly sleep-onset insomnia, consider alternative agents or ensure adequate time between dosing and attempting sleep.