Resources / Medication education
Trazodone: the borrowed sleep medication
Trazodone is an antidepressant from the 1980s that found a second life at lower doses as psychiatry's most prescribed non controlled sleep aid. It isn't a controlled substance, doesn't build tolerance the way Z-drugs do, and helps many people fall asleep, with honest caveats worth knowing.
Medically reviewed by Shariq Refai, MD, MBA, FAPA, board certified psychiatrist · Published June 7, 2026 · Last reviewed June 8, 2026 · Editorial policy
How it works
Antidepressant doses vs sleep doses
At full antidepressant doses trazodone modulates serotonin; at the much lower doses used for sleep, its antihistamine and alpha-blocking effects dominate, producing sedation without the dependence machinery of controlled hypnotics. That pharmacology is why it became the workhorse it is: effective enough, safe enough, and free of the escalation pattern that makes controlled sleep medications a trap for some people.
The honest caveat: its formal evidence base for chronic insomnia is thinner than its popularity suggests, and CBT-I, the structured behavioral treatment, outperforms every sleep medication long term. We use trazodone as a tool, not a foundation.
Who it fits
Where trazodone makes sense
Common, defensible uses:
- Insomnia alongside depression or anxiety, while daily treatment builds
- Insomnia in people with substance-use history, where controlled hypnotics are off the table
- Sleep-onset difficulty where antihistamine options failed or caused hangover
Safety
Side effects and one rare warning
Common: morning grogginess (dose and timing dependent), dizziness on standing, dry mouth, nasal congestion. Rare but mandatory to mention: priapism, a prolonged, painful erection that is a medical emergency; it is rare, and every male patient hears about it from us before the first dose, because the warning only works if you've heard it. Trazodone adds to other sedatives and alcohol.
Keep exploring
Related reading
Frequently asked questions
Good questions, clear answers
Is trazodone addictive?
No. It's not a controlled substance, doesn't produce euphoria or cravings, and doesn't require dose escalation, the core reasons it's our usual first medication conversation for sleep.
Why such a low dose for sleep?
Because sedation appears at doses far below the antidepressant range. Low-dose use targets sleep mechanisms specifically, with fewer side effects than full dosing.
Will I be groggy in the morning?
Possibly, especially at first or at higher doses. Taking it earlier in the evening and right-sizing the dose usually solves it; if not, it's the wrong tool for you and we move on.
Is trazodone better than melatonin?
Different tools: melatonin nudges circadian timing and is mild; trazodone sedates more reliably. For chronic insomnia, CBT-I beats both, and we'll say that every time.
Can trazodone treat depression by itself?
At full doses it's a real antidepressant, though it's rarely first choice today because newer agents are better tolerated. Its modern identity is the low-dose sleep role.
What dose of trazodone is used for sleep?
Far below antidepressant dosing, your clinician sets the specific number for you. The principle worth knowing: the sleep effect appears at low doses, so more is not better, it is just groggier.
Does trazodone cause weight gain?
Less than most sedating alternatives; at low sleep doses it is close to weight neutral for most people. Appetite effects are milder than mirtazapine's, one reason it leads the sleep conversation.
Can trazodone be combined with my antidepressant?
Yes, commonly and rationally, low-dose trazodone at night alongside a daytime SSRI or SNRI is one of psychiatry's most used pairings. We watch total serotonergic load, which is why your full medication list matters.
Questions about medication? That's what evaluations are for
Meet a board certified clinician by video, as clinician availability allows, and get answers specific to you. We prescribe responsibly and never prescribe controlled substances.
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