Combining Medications with Restoril (Temazepam) for Sleep
Generally, you should NOT combine Restoril with other sedative-hypnotics due to safety concerns, but if temazepam alone is insufficient, low-dose doxepin (3-6 mg) is the most evidence-based addition for sleep maintenance problems, while ramelteon (8 mg) can be added for sleep onset issues.
Critical Safety Warning
Avoid combining Restoril with other CNS depressants, including alcohol and other sedatives 1. The 2008 AASM guideline explicitly warns about "additive effects on psychomotor performance with concomitant CNS depressants" and the FDA has issued warnings regarding adverse effects when benzodiazepine receptor agonists are combined with alcohol or other sedatives 1.
Evidence-Based Combination Options
When Temazepam Alone Is Inadequate
The 2008 AASM guideline provides a structured approach for combination therapy 1:
Primary Addition: Low-Dose Sedating Antidepressants
If temazepam (15-30 mg) fails to adequately control insomnia, the guideline supports combining a benzodiazepine receptor agonist with a low-dose antidepressant 1. This combination:
- Targets multiple sleep-wake mechanisms
- Minimizes toxicity compared to higher doses of a single agent
- Has "a wealth of clinical experience" supporting general safety and efficacy 1
Specific medication options based on 2017 AASM guidelines:
Doxepin 3-6 mg: The only antidepressant with a positive recommendation for sleep maintenance insomnia 2. This is your best evidence-based choice for combination therapy.
Ramelteon 8 mg: Can be added for sleep onset problems, as it works through a different mechanism (melatonin receptors) 2. This combination would not have the same CNS depression concerns.
What NOT to Add
The 2017 AASM guideline explicitly recommends AGAINST several options 2:
- Trazodone 50 mg: Despite widespread clinical use, guidelines suggest NOT using it
- Diphenhydramine: Not recommended
- Melatonin: Not recommended at 2 mg doses
- Tiagabine: Not recommended
Clinical Decision Algorithm
Step 1: Optimize temazepam dosing first (7.5-30 mg) 3
Step 2: If inadequate response, identify the specific sleep problem:
- Sleep maintenance insomnia → Add doxepin 3-6 mg
- Sleep onset insomnia → Add ramelteon 8 mg
- Both problems → Consider doxepin first, as temazepam already addresses onset 2
Step 3: Monitor carefully for:
- Daytime sedation (especially with doxepin)
- Cognitive impairment
- Falls risk (particularly in elderly)
- Respiratory depression (if sleep apnea present)
Important Caveats
Elderly patients: Use lower doses of both medications. Temazepam should start at 7.5 mg in elderly or debilitated patients 1. The combination increases fall risk.
Comorbid depression: If the patient has comorbid depression, the low doses of antidepressants used for sleep (doxepin 3-6 mg) do NOT constitute adequate treatment of major depression 1. Full antidepressant dosing would be needed separately.
Duration of use: The FDA approves pharmacologic therapy for short-term use (4-5 weeks) 4. Long-term combination therapy lacks safety data and should prompt re-evaluation of the underlying insomnia and consideration of cognitive behavioral therapy for insomnia (CBT-I).
Contraindications to combination: Do not combine if patient has:
- Compromised respiratory function (asthma, COPD, sleep apnea)
- Hepatic impairment (requires dose adjustment)
- History of substance abuse
- Concurrent use of other CNS depressants 1
The Bottom Line
While monotherapy is preferred, doxepin 3-6 mg is the only antidepressant with guideline support for combination with temazepam when addressing persistent sleep maintenance insomnia 2. Ramelteon offers a mechanistically different option for sleep onset problems without the same CNS depression concerns. All other commonly used combinations (trazodone, antihistamines, melatonin) lack evidence support or have negative recommendations in current guidelines 2.