Trazodone for sleep: how it’s used, side effects and safety
By the Medsmingle Team · Updated 13 November 2026
This is a prescription medicine. Only take it if it has been prescribed for you after a medical assessment, and follow your doctor’s and pharmacist’s instructions.
Trazodone (Desyrel) is an antidepressant approved for depression. It is sometimes prescribed off-label for insomnia; it is not FDA-approved as a sleep treatment. The benefit-risk balance and dose require individual assessment.
How it helps sleep
It blocks certain serotonin and histamine receptors, which makes you drowsy. It isn’t considered addictive in the way some sleeping pills are.
Side effects
- Morning grogginess
- Dizziness, especially getting up at night: stand up slowly, as falls are a risk in older adults
- Dry mouth, headache
- Stuffy nose
Rare but serious
- Priapism: an erection lasting more than 4 hours, painful or not is an emergency
- Irregular heartbeat in people with heart rhythm problems
Important safety information
- Don’t stop suddenly; your doctor will taper the dose to avoid discontinuation symptoms
- Suicidal thoughts: Antidepressants carry a warning about suicidal thoughts or behavior in children, adolescents and young adults, especially early in treatment or after dose changes. Seek urgent medical advice for new or worsening symptoms and emergency help for immediate danger.
- Serotonin syndrome (rare): agitation, fever, fast heartbeat, muscle twitching. Get urgent help
Interactions
- Alcohol, opioids and other sedatives
- Other antidepressants, triptans, tramadol
- Some antifungals and HIV medicines raise levels
Frequently asked questions
Is trazodone a sleeping pill?
It’s an antidepressant used off-label for sleep. Behavioral therapy for insomnia (CBT-I) is the first-line long-term treatment.
For questions about a prescription or symptoms, speak with your own doctor or pharmacist. For website enquiries, contact our team.
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General information only. It isn’t a substitute for advice from your doctor or pharmacist.
Source
MedlinePlus patient medicine information. This overview does not list every warning or interaction.