Ramelteon (Rozerem) for Insomnia Treatment
Ramelteon 8 mg taken within 30 minutes of bedtime is recommended for the treatment of sleep onset insomnia in adults. 1
Dosage and Administration
- Standard dose: 8 mg orally once daily
- Timing: Take within 30 minutes of going to bed 1
- Administration considerations:
Clinical Indications
Ramelteon is specifically indicated for:
Mechanism of Action
Ramelteon works differently from other sleep medications:
- Selective melatonin receptor (MT1 and MT2) agonist 2
- Enhances sleep through effects on sleep regulatory mechanisms in the suprachiasmatic nucleus
- Does not have direct sedating effects like other hypnotics 2
Clinical Efficacy
- Reduces latency to persistent sleep (time to fall asleep) by approximately 9-19 minutes compared to placebo 1, 4
- Modest but statistically significant improvements in:
- Sleep onset time
- Total sleep time (increases of 8-22 minutes in some studies) 4
- Effects on sleep onset are evident at week 1 and can be sustained through 5 weeks of treatment 5
Special Populations
- Hepatic impairment:
- Not recommended in severe hepatic impairment
- Use with caution in moderate hepatic impairment 1
- Elderly patients:
- Standard 8 mg dose is appropriate; no dose adjustment needed 1
Drug Interactions
- Contraindicated with:
- Fluvoxamine (strong CYP1A2 inhibitor) 1
- Use with caution with:
- Other CYP1A2 inhibitors 1
Safety Profile and Advantages
- No abuse potential:
- Common adverse effects:
- No significant impairment of next-day cognitive or motor performance 6
Clinical Pearls
- Ramelteon is the only FDA-approved sleep medication that works through melatonin receptors rather than through sedative effects 2
- Most appropriate for patients with difficulty falling asleep rather than staying asleep
- May be particularly valuable for patients with history of substance abuse or concerns about medication dependence 2
- Effects on sleep latency are modest but clinically meaningful for many patients 4
Monitoring
- Assess effectiveness based on improvement in sleep onset time
- Monitor for adverse effects, particularly headache and dizziness
- No specific laboratory monitoring required
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