Sleep · Medication Guide
Trazodone for Sleep in Thailand
What trazodone is, why doctors prescribe it off-label for sleep, its honest evidence and side effects, and how to get it legally in Bangkok. Reviewed by a licensed physician at a MOPH-registered men's health clinic.
- Non-controlled alternative to Z-drugs
- Prescription only · ordered per patient
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Medically reviewed by Dr. Noppon Arunkajohnsak (Win)
Menscape Clinic
Last reviewed
11 July 2026
1981
First approved (US)
as an antidepressant, four decades of use
25–100
mg in sleep studies
well below full antidepressant doses
~7 h
Elimination half-life
covers the night, explains morning grogginess
Rx
Not a controlled drug
unlike zolpidem, a Category 2 psychotropic
Key takeaways
Trazodone is a prescription antidepressant that doctors widely prescribe off-label, at low doses, to help men fall and stay asleep.
The evidence for insomnia is modest: it beat placebo in week 1 of the key trial, and the sleep-medicine guideline does not recommend it as routine insomnia treatment.
In Thailand trazodone is not a controlled psychotropic. Zolpidem is, and can only be dispensed through licensed medical facilities. That is a big part of why doctors reach for trazodone.
Morning grogginess is the most common complaint. Priapism is rare but an emergency: an erection lasting over 4 hours means go to hospital, not back to sleep.
01
What trazodone is & why it helps sleep
Trazodone is an oral antidepressant, first approved in the United States in 1981.¹ At full doses it treats major depression. At much lower doses, doctors around the world prescribe it off-label as a night-time sedative, and it has become one of the most commonly prescribed medicines for insomnia despite never being approved for it.⁴
The sedation is built into its pharmacology. Trazodone blocks histamine H1 and serotonin 5-HT2A receptors, two of the brain's wakefulness signals, at doses well below those needed for an antidepressant effect. That is why sleep doses in the literature run 25–100 mg, while depression treatment starts at 150 mg per day.¹ ⁴
There is a specifically Thai reason doctors consider it. Zolpidem and the other Z-drugs are Category 2 psychotropic substances under Thai law, dispensed only through licensed medical facilities under strict controls.⁶ Trazodone offers a prescription route to better sleep without the scheduling and without the Z-drugs' dependence pattern. It is still not a first choice: the evidence is modest, and a doctor should first look for the reason you cannot sleep.
Blocks the wake signals
At low doses trazodone blocks histamine H1 and serotonin 5-HT2A receptors, two pathways that keep the brain alert.¹
Sedation before antidepressant effect
The sedating effects appear at 25–100 mg, well below the 150 mg and up used to treat depression.⁴
Covers the night
An elimination half-life of about 7 hours spans a full night's sleep. It also explains next-morning grogginess in some men.¹
No controlled-drug scheduling
Unlike Z-drugs, trazodone is not a psychotropic substance in Thailand and has shown little dependence potential in clinical use.⁴ ⁶
02
Getting trazodone in Thailand
Thai legal status
Trazodone is a Thai FDA-registered prescription antidepressant, sold in Thailand under brands such as Trittico. It is not a controlled psychotropic substance, but it is not a free-sale medicine either: expect to need a doctor's prescription.⁵
How to get it through Menscape
Menscape does not keep trazodone on the shelf. If the doctor decides it is appropriate after a sleep consultation, it is ordered per patient through licensed channels, then dispensed for pickup at the Asoke clinic or delivery.
Skip the grey market
Sleep medicines are a magnet for counterfeiters, and unlicensed online sellers are illegal in Thailand. Borrowing someone's zolpidem is worse: it is a Category 2 psychotropic, and possession without a valid prescription is an offence.⁶
Regulatory note. Zolpidem, zopiclone and similar hypnotics are Category 2 psychotropic substances under Thailand's Psychotropic Substances Act B.E. 2559 (2016) and may only be dispensed through licensed medical facilities. Trazodone is not scheduled under that Act but remains a prescription medicine.⁶
03
Does it work? The evidence
Be clear-eyed about the data. In the best-known randomised trial, two weeks in adults with primary insomnia, trazodone 50 mg improved self-reported sleep latency and sleep duration versus placebo during week 1; by week 2 most of that advantage was no longer statistically significant, and zolpidem outperformed it on sleep onset throughout.² Weighing this thin evidence, the American Academy of Sleep Medicine's 2017 guideline suggests clinicians not use trazodone as routine treatment for chronic insomnia.³
So why is it prescribed so widely? Because the alternatives have their own problems: Z-drugs are controlled substances with real dependence potential, and sedating antihistamines lose their effect within days. Trazodone is non-controlled, has four decades of safety history, and shows little dependence potential at low doses.⁴ The approach Menscape's doctors take reflects that trade-off: screen for causes and fix sleep habits first, and if a medicine is still warranted, use the lowest dose for a defined period with a planned review.
Week 1
Better sleep vs placebo
self-reported, trazodone 50 mg
Week 2
Advantage faded
no longer significant versus placebo
Two-week randomised, placebo-controlled trial in adults with DSM-III-R primary insomnia (Walsh et al., 1998). Individual results vary.
04
Side effects & who shouldn't take it
Common side effects
Morning drowsiness is the main complaint, a predictable result of the roughly 7-hour half-life. Dizziness, headache, dry mouth, blurred vision and nausea are also reported. Standing up too fast at night can drop your blood pressure (orthostatic hypotension), so rise slowly.¹
Rare but serious
Priapism, a painful erection lasting more than 4 hours, is rare (older estimates around 1 in 6,000 men) but is a medical emergency that can cause permanent damage.¹ ⁷ Trazodone can also affect heart rhythm (QT prolongation) and, combined with other serotonergic drugs, cause serotonin syndrome.¹
Not suitable for
Men in the recovery phase after a heart attack, anyone taking or recently stopped on an MAOI antidepressant, men under 18, and men with significant heart-rhythm problems. Liver or kidney disease, and any history of priapism, call for extra caution and doctor judgment.¹
Interactions to flag
Alcohol and other sedatives compound the drowsiness. SSRIs, SNRIs, tramadol and dextromethorphan raise serotonin-syndrome risk. Ketoconazole, some HIV medicines and other CYP3A4 inhibitors raise trazodone levels. Bring a full medication list to the consultation.¹
05
Alternatives & combinations
Behavioural · first-line
CBT-I
Cognitive behavioural therapy for insomnia is the guideline-recommended first treatment. It targets the habits and thought patterns keeping you awake, and its benefits persist after treatment ends.³
Hormone · pharmacy channel
Melatonin
Regulated as a drug in Thailand, not a supplement. Evidence is modest but it is gentle, non-controlled, and a reasonable first step for sleep-onset problems and jet lag.
Z-drug · controlled in Thailand
Zolpidem
Stronger trial data for sleep onset, but a Category 2 psychotropic dispensed only through licensed medical facilities, with real dependence potential. Short-term, doctor-supervised use only.⁶
06
How prescription works at Menscape
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Message us on WhatsApp or LINE
A few minutes on your phone: your sleep pattern, caffeine and alcohol habits, health history and current medications. PDPA-protected.
Doctor consultation
A licensed Thai physician looks for the cause first: habits, stress, alcohol, sleep apnea, low mood. Medication is discussed only if it makes sense for your case.
Prescription & sourcing, if suitable
Trazodone is not a shelf item at Menscape. If prescribed, it is ordered for you through licensed channels, then dispensed for pickup at Asoke or delivery.
Review & exit plan
Follow-up at 2–4 weeks. The goal is the lowest dose for the shortest useful period, with a plan to stop, not an open-ended refill.
The doctor decides. Starting a conversation is not a commitment and does not guarantee a prescription. If trazodone is not right for you, your doctor will say so and discuss alternatives, starting with your sleep habits.
Medically reviewed by
Dr. Noppon Arunkajohnsak (Win)
Menscape Clinic, Bangkok
“The first question is never which tablet, it's why you can't sleep. Once we know that, low-dose trazodone is one honest option among several, and sometimes the answer is no tablet at all.”
- Reviewed
- 11 July 2026
- Next review
- January 2027
- Editorial standard
- Each guide is checked against the Thai FDA label and the primary literature, then reviewed by a licensed physician.
07
Frequently asked questions
Can I buy trazodone over the counter in Thailand?
No. Trazodone is a prescription antidepressant. It is not a controlled psychotropic like zolpidem, but you still need a doctor's prescription. Anything sold without one is illegal and a counterfeit risk.
Isn't trazodone an antidepressant? Why take it for sleep?
At low doses its sedating effects appear without the full antidepressant action, because the receptors that cause drowsiness respond at smaller amounts. Prescribing it for sleep is off-label but extremely common worldwide. Your doctor will explain whether it fits your case.
Is trazodone addictive?
Clinical reviews report little dependence potential, which is a key reason doctors choose it over Z-drugs. That is not a licence for open-ended use: the goal is still the lowest dose for a defined period, with a review.
Why can't I just get zolpidem instead?
In Thailand zolpidem is a Category 2 psychotropic substance, legally dispensed only through licensed medical facilities under strict controls. A doctor may still consider it for short-term use, but it cannot be bought at a pharmacy, and its dependence risk is real.
Will I feel groggy the next morning?
Some men do, especially in the first week or at higher doses: with a roughly 7-hour half-life, some drug is still on board at breakfast. Taking it earlier in the evening and staying at the lowest effective dose usually helps. Tell your doctor if it persists.
What is the priapism warning about?
Trazodone can rarely cause a prolonged, painful erection unrelated to arousal; older estimates put it around 1 in 6,000 men. An erection lasting more than 4 hours is a medical emergency that can cause permanent damage. Stop the medicine and go to an emergency department immediately.
Can I drink alcohol while taking trazodone?
Best not to. Alcohol multiplies the sedation and, on its own, fragments sleep in the second half of the night. If you drink regularly, tell the doctor; it changes both the diagnosis and the treatment choice.
Does Menscape have trazodone in stock?
No. It is ordered per patient after a doctor consultation, through licensed channels. If the doctor prescribes it, the clinic arranges pickup at the Asoke clinic or delivery.
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References
1. U.S. FDA. Desyrel® (trazodone hydrochloride) prescribing information. Accessed July 2026.
2. Walsh JK, et al. Subjective hypnotic efficacy of trazodone and zolpidem in DSM-III-R primary insomnia. Hum Psychopharmacol. 1998;13(3):191-198.
3. Sateia MJ, et al. Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: an American Academy of Sleep Medicine clinical practice guideline. J Clin Sleep Med. 2017;13(2):307-349.
4. Jaffer KY, et al. Trazodone for insomnia: a systematic review. Innov Clin Neurosci. 2017;14(7-8):24-34.
5. Thai Food and Drug Administration — drug registration database, ndi.fda.moph.go.th. Accessed July 2026.
6. Psychotropic Substances Act B.E. 2559 (2016), Thailand — Category 2 listing of zolpidem. Thai FDA.
7. Thompson JW Jr, et al. Psychotropic medication and priapism: a comprehensive review. J Clin Psychiatry. 1990;51(10):430-433.
This guide is educational information, not medical advice. Trazodone is a prescription antidepressant; using it for sleep is an off-label decision that must be made and monitored by a licensed physician. An erection lasting more than 4 hours while taking it is a medical emergency.
This guide is part of the Menscape sleep library
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