Trazodone facts, myths, and online claims
Trazodone (Desyrel, Oleptro) is an antidepressant that works on serotonin. It is approved in the US for major depressive disorder in adults, and it is widely prescribed off label in low doses as a sleep aid. It comes as 50 mg, 100 mg, 150 mg and 300 mg tablets, taken shortly after a meal or light snack, often with the larger share at bedtime because it causes drowsiness. It is not a controlled substance.
Below: what the FDA label and NIH sources establish, what people say about Trazodone in public forums set next to the evidence, the misconceptions that come up most, and the questions people ask. Every line links to where it came from.
Established facts (8)
The FDA label approves trazodone for major depressive disorder in adults. It carries the antidepressant boxed warning that these drugs increased the risk of suicidal thoughts and behaviors in pediatric and young adult patients in short-term studies.
For depression the label starts at 150 mg a day in divided doses, raised by 50 mg every 3 to 4 days if needed. The maximum is 400 mg a day for outpatients and 600 mg a day for inpatients.
Food changes how fast it is absorbed. Peak blood levels occur about one hour after a dose on an empty stomach and about two hours after a dose taken with food. It is broken down by the liver enzyme CYP3A4, and less than 1% leaves the body unchanged.
In outpatient trials the most common side effects against placebo were drowsiness (41% vs 20%), dry mouth (34% vs 20%), dizziness or lightheadedness (28% vs 15%), headache (20% vs 16%) and blurred vision (15% vs 4%).
Trazodone is not a controlled substance. The label notes that no sign of drug-seeking behavior was seen in clinical studies, although its abuse potential has not been studied systematically.
Cases of priapism, painful erections lasting more than 6 hours, have been reported in men taking trazodone. The label states that untreated priapism can cause irreversible damage to erectile tissue.
A 2024 meta-analysis of 44 randomized trials with 3,935 participants found trazodone improved sleep quality and reduced night awakenings but did not change how long people felt they slept. Dropouts due to side effects were about twice as common as with placebo.
MedlinePlus lists depression as the approved use and notes trazodone is also prescribed for insomnia, anxiety and other conditions. It may take 2 weeks or longer before the full antidepressant benefit is felt.
What people say online (5)
Claims collected from public forums and review sites, quoted the way people put them. They are listed so the evidence can sit next to them, not because they are true. Status reflects what the cited studies and labels show as of 2026-09-07.
- Partly supported
"It makes you ravenously hungry at night and you gain a lot of weight."
In the label's trials, weight gain was reported by 5% of outpatients on trazodone versus 2% on placebo, and weight loss by 6% versus 3%. A large meta-analysis of antidepressants found no meaningful short-term weight effect for trazodone, and a sleep meta-analysis found decreased appetite more often than with placebo. Individual responses vary.
- Unproven
"It stops working for sleep after a few weeks, so the dose has to keep going up."
Most trazodone sleep trials are short. A 2024 meta-analysis of 44 trials noted that limited data restrict what can be concluded, and a large Lancet network meta-analysis said information about trazodone's long-term effects in insomnia is not available. Loss of effect over time has not been measured well either way.
Seen on AskaPatient reviews, Drugs.com reviewsEvidence PubMed (CNS Drugs, 2024), PubMed (Lancet, 2022) - Partly supported
"It leaves you with a hangover and grogginess the whole next day."
Drowsiness is the most common side effect in the label (41% versus 20% on placebo), and a meta-analysis of insomnia trials found daytime drowsiness about 2.5 times more likely than with placebo. Another meta-analysis judged the effect on daytime impairment minor. Next-day grogginess is real for some people but not universal.
- Partly supported
"It is non-addictive, so you can quit it any time without problems."
Trazodone is not a controlled substance and trials showed no drug-seeking behavior. That is separate from discontinuation effects: the label lists nausea, sweating, irritability, agitation and dizziness after abrupt stopping, and MedlinePlus and the NHS describe withdrawal symptoms and a gradual dose reduction.
Seen on Drugs.com reviews, Drugs.com Q&AEvidence FDA label (DailyMed), MedlinePlus, NHS - Partly supported
"It gives you intense vivid dreams and nightmares."
Abnormal dreams appear in the label's postmarketing reports, but the controlled trial tables do not give a rate, so how common this is remains unclear. A meta-analysis of sleep-lab studies found no clear change in REM sleep, the stage most linked to dreaming.
Seen on Drugs.com Q&A, AskaPatient reviewsEvidence FDA label (DailyMed), PMC (Sci Rep, 2022)
Common misconceptions (5)
Myth Trazodone is an FDA-approved sleeping pill.
Reality The only FDA-approved use is major depressive disorder in adults. Its use for insomnia, usually at 25 to 100 mg, is off label. Trials for sleep show better sleep quality but no change in how long people feel they slept.
Myth Trazodone is a narcotic or a controlled substance.
Reality It is an antidepressant, not an opioid, and the FDA does not schedule it as a controlled substance. Clinical studies showed no drug-seeking behavior, although its abuse potential has not been studied in a systematic way.
Myth Because it is not habit forming, stopping it abruptly has no effects.
Reality The label describes adverse reactions after discontinuation, including nausea, sweating, low mood, irritability, agitation and dizziness, and advises a gradual dose reduction rather than an abrupt stop whenever possible.
Myth A long-lasting erection on trazodone is harmless and will pass on its own.
Reality The label reports priapism, painful erections lasting more than 6 hours, in men taking trazodone, and states that untreated priapism can cause irreversible damage to erectile tissue. The NHS lists it among serious side effects.
Myth Trazodone treats depression from the first dose, the same night it helps sleep.
Reality Drowsiness comes on within hours, but MedlinePlus states it may take 2 weeks or longer before the full antidepressant benefit is felt, and Drugs.com puts the full effect at up to 6 weeks.
Questions people ask (8)
- Is trazodone used for sleep?
- Yes, commonly, but off label. It is not FDA approved for insomnia. For sleep, doses of about 25 to 100 mg are typical, far below the 150 to 400 mg range used for depression. Its sedating effect peaks around 30 minutes to 2 hours after a dose.
- How long does trazodone take to work?
- For depression, some improvement may appear after 1 to 2 weeks, but the full benefit can take up to 6 weeks. The sleep-inducing effect is felt the same night because drowsiness is an immediate side effect.
- How long does trazodone stay in your system?
- Its half-life is about 5 to 13 hours. Since a drug is mostly gone after about five half-lives, trazodone is typically cleared from the body in roughly 27 to 72 hours.
- Does trazodone cause weight gain?
- It can, but not often. In clinical trials 5% of outpatients gained weight versus 2% on placebo, while 6% lost weight versus 3%. Trazodone is generally thought to carry a lower weight-gain risk than several other antidepressants.
- Is trazodone a controlled substance?
- No. The FDA does not classify trazodone as a controlled substance, and clinical trials showed no drug-seeking behavior. It is considered to have a low potential for abuse, although dedicated research on that question is limited.
- What are the most common side effects of trazodone?
- Drowsiness, dry mouth, dizziness, headache and blurred vision top the list in trials. Less common but serious effects include priapism, fainting from low blood pressure, heart rhythm changes and, as with all antidepressants, suicidal thoughts in younger people.
- Is trazodone taken with food?
- The label directs that it be taken shortly after a meal or light snack. Taking it with food slows absorption, moving the peak blood level from about one hour after a dose to about two hours.
- What happens if trazodone is stopped suddenly?
- Withdrawal symptoms can occur, including dizziness, nausea, headache, confusion, anxiety and, rarely, seizures. MedlinePlus and the NHS both describe a gradual dose reduction supervised by a prescriber rather than an abrupt stop.
Not medical advice. This page summarizes public sources and public opinion about Trazodone. It cannot see your dose, your other medicines, or your history. A pharmacist or prescriber can.