Rozarem (Ramelteon): Medication Overview
Rozarem (ramelteon) is a melatonin receptor agonist approved for treating insomnia characterized by difficulty with sleep onset, administered as 8 mg orally 30 minutes before bedtime, and is not classified as a controlled substance. 1
Indication and Diagnosis
Rozarem is indicated for patients with chronic insomnia who specifically have difficulty initiating sleep (prolonged sleep latency). 1 The diagnosis of insomnia requiring treatment should be based on:
- Persistent difficulty falling asleep (prolonged sleep onset latency)
- Duration of symptoms consistent with chronic insomnia
- Impact on daytime functioning or quality of life 1
Treatment Regimen
Standard Dosing
- 8 mg orally administered 30 minutes before bedtime 1
- Treatment can be continued long-term, as studies demonstrate maintained efficacy through 6 months 1
- No dose tapering required upon discontinuation, as ramelteon is not associated with withdrawal symptoms or rebound insomnia 1
Clinical Efficacy
Objective Sleep Parameters
- Latency to persistent sleep (LPS) improves at week 1 and maintains throughout 5-week and 6-month studies 1
- Total sleep time (TST) and sleep efficiency (SE) show improvement primarily during the first week of treatment 1
Subjective Sleep Parameters
- Subjective sleep latency (sSL) improvements are inconsistent across studies 1
- When sSL improvement occurs at week 1, effects maintain through 5-week studies but not consistently through 6-month studies 1
Safety Profile
Favorable Safety Characteristics
- Well tolerated with minimal adverse effects 1
- No impairment of next-day cognitive or motor performance 1
- No withdrawal symptoms upon discontinuation 1
- No rebound insomnia after stopping treatment 1
- No abuse potential - not classified as a controlled substance 1
Overdose Management
- In reported ramelteon ingestions to Texas poison centers (2005-2009), 88.3% resulted in no significant clinical effect 2
- 75% of single-agent ramelteon ingestions were managed at healthcare facilities, but outcomes were generally benign 2
- Standard supportive care is adequate for overdose management 2
Important Clinical Considerations
Patient Selection
- Ideal for patients with sleep-onset insomnia rather than sleep maintenance problems 1
- Appropriate for patients requiring long-term therapy due to favorable safety profile 1
- Suitable for patients with substance abuse concerns given lack of controlled substance classification 1
Limitations
- Inconsistent improvements in subjective sleep measures across all patients 1
- Primary benefit in first week for total sleep time and sleep efficiency, with less consistent long-term effects on these parameters 1
Delirium Prevention (Off-Label Use)
Ramelteon is NOT recommended for delirium prevention in hospitalized patients, as meta-analysis of randomized controlled trials (n=443) showed no reduction in incident delirium risk (OR=0.49,95% CI=0.13-1.85). 3