Trazodone for Sleep: What Canadians Should Know Before Taking It

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Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Trazodone is a prescription medication. Do not start, stop, or change the dose of any medication without consulting your physician. If you are experiencing sleep difficulties, speak with your family doctor.

Your doctor hands you a prescription. You look at it: trazodone. You Google it when you get home and the first result says "antidepressant." You are not depressed. You just cannot sleep. So why is your doctor prescribing you an antidepressant?

This is one of the most common points of confusion in sleep medicine, and it happens thousands of times a day across Canada. Trazodone is technically an antidepressant, but at the doses prescribed for insomnia, it functions primarily as a sedative. Understanding how and why can help you make an informed decision about whether it is right for you.

What Trazodone Actually Is

Trazodone was developed in Italy in the 1960s and approved for the treatment of major depressive disorder. It belongs to a class called SARIs (serotonin antagonist and reuptake inhibitors). At full antidepressant doses (150-400 mg), it modulates serotonin activity in ways that improve mood.

But doctors noticed something early on: patients taking trazodone got very drowsy. What was a side effect for depression treatment turned out to be the main attraction for insomnia. By the 1990s, trazodone at low doses (25-100 mg) had become the most commonly prescribed off-label sleep medication in North America, a position it still holds today.

According to a 2017 study by Wong et al. published in the Journal of Clinical Psychiatry, trazodone accounts for roughly one-third of all medications prescribed for insomnia in the United States and Canada, despite having no official Health Canada or FDA indication for insomnia.

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Typical Dosing for Insomnia

When prescribed for sleep, trazodone is used at much lower doses than for depression.

Most Canadian physicians start at 25-50 mg taken 30 minutes before bed and adjust based on response. The goal is the lowest effective dose that helps you sleep without causing next-day impairment.

Side Effects You Should Know About

Common at sleep doses (25-100 mg)

• Morning grogginess. The most frequent complaint. Trazodone has a half-life of 5-9 hours, which means it can still be active when your alarm goes off, especially at higher doses.
• Dry mouth. Caused by the anticholinergic properties. Usually mild.
• Dizziness when standing. Trazodone can lower blood pressure (orthostatic hypotension). Get up slowly, especially during the first week.
• Nasal congestion. A lesser-known side effect that bothers some people enough to stop the medication.
• Headache. Usually resolves within the first week.

Less common but important

• Next-day cognitive impairment. Some people report difficulty concentrating or "brain fog" the morning after, particularly at doses above 50 mg.
• Weight changes. Less common than with other antidepressants, but possible.
• Blurred vision. Usually temporary and dose-dependent.

Rare but serious

• Priapism. A prolonged, painful erection that requires emergency medical treatment. Rare (estimated 1 in 10,000 to 1 in 20,000 male patients) but serious. Seek emergency care immediately if this occurs.
• Serotonin syndrome. Can occur when trazodone is combined with other serotonergic medications (SSRIs, SNRIs, tramadol, St. John's Wort). Symptoms include agitation, rapid heart rate, high temperature, and muscle rigidity. This is a medical emergency.
• Cardiac effects. At higher doses, trazodone can affect heart rhythm. Patients with pre-existing cardiac conditions should discuss this with their cardiologist.

Who Gets Prescribed Trazodone for Sleep

Trazodone tends to be prescribed in specific situations:

• Insomnia with co-existing depression or anxiety. Since trazodone treats both, it can address two problems with one prescription.
• Patients who cannot take benzodiazepines. People with a history of substance use disorder, or those who prefer to avoid controlled substances.
• Patients who have tried melatonin and sleep hygiene without success. Trazodone is often the next step after non-prescription approaches have failed.
• Older adults. Trazodone is generally considered safer for seniors than benzodiazepines, which significantly increase fall risk and cognitive impairment in older populations.
• People with sleep maintenance insomnia. Trazodone is particularly effective for people who fall asleep but wake up repeatedly during the night.

Trazodone vs. Other Sleep Medications

The key advantage of trazodone over Z-drugs (zopiclone) and benzodiazepines (lorazepam) is the lower risk of physical dependence and withdrawal. The disadvantage is that it was never specifically designed or optimised for sleep, so the dosing, onset time, and side effect profile are less predictable than purpose-built sleep medications.

The Bigger Picture: Why Medication Alone Is Not Enough

Here is the part that most articles about trazodone skip: medication addresses the symptom (you cannot sleep) without addressing the cause (why you cannot sleep). And the causes are almost always multifactorial.

CBT-I is more effective long-term

Cognitive behavioural therapy for insomnia (CBT-I) is recommended by the American Academy of Sleep Medicine, the Canadian Sleep Society, and Health Canada's clinical guidelines as the first-line treatment for chronic insomnia. A 2016 meta-analysis by Mitchell et al. in the Annals of Internal Medicine found that CBT-I produces equivalent short-term improvements to medication, with superior long-term outcomes because the skills persist after treatment ends.

Trazodone works when you take it. CBT-I works after you stop doing it. That is a meaningful difference.

The sleep environment matters more than people think

In our experience at Mattress Miracle, many customers taking sleep medication have never systematically addressed their sleep environment. They are sleeping on a mattress that is 12 years old and sagging. The room is too warm. Their partner's movements wake them up three times a night. They take trazodone to overcome these problems pharmacologically rather than fixing them directly.

We are not suggesting that a new mattress replaces medication. That would be irresponsible. But we have had enough conversations with enough customers over 37 years to notice a pattern: people often reach for a pill before they look at the bed they are sleeping on.

A realistic approach

For many people, the most effective path is a combination:

1. Use trazodone short-term to break the acute insomnia cycle and restore some sleep
2. Address sleep hygiene basics: consistent schedule, cool room, dark environment, limited caffeine
3. Fix the physical environment: a supportive mattress, appropriate bedding, noise management
4. Pursue CBT-I (available through the Ontario Structured Psychotherapy program, free with OHIP referral)
5. Taper off medication with your doctor's guidance as behavioural strategies take hold

The Sleep Environment Factor

If you are taking trazodone because you cannot stay asleep, it is worth asking: what is waking you up?

Partner movement is one of the most common sleep disruptors, and individually wrapped coils dramatically reduce motion transfer compared to traditional innerspring mattresses. The Restonic ComfortCare Queen ($1,619, 1,222 individually wrapped coils) provides strong motion isolation at a price point that does not require its own prescription. For couples where one partner is a light sleeper (or one is on trazodone and one is not), the difference between shared coils and individually wrapped coils is significant.

Temperature is another factor. Overheating disrupts sleep architecture, particularly the deep slow-wave sleep that trazodone is supposed to enhance. The Restonic Luxury Silk and Wool Queen ($2,395, 884 zoned coils) uses natural fibres that regulate temperature throughout the night without the chemical cooling gels that break down over time.

Brad, who has owned Mattress Miracle since 1997, puts it simply: "If I had to choose between a $50 prescription and a $1,125 mattress for someone who has been sleeping on the same bed for 15 years, I would pick the mattress. It will do more, last longer, and has no side effects."

Our white glove delivery brings the mattress to your room, sets it up, and removes the old one. Sometimes upgrading your sleep environment is the thing that makes the medication work better, or makes it unnecessary.

Sources

1. Wong J, Motulsky A, Eguale T, Buckeridge DL, Abrahamowicz M, Tamblyn R. Treatment indications for antidepressants prescribed in primary care in Quebec, Canada, 2006-2015. JAMA. 2016;315(20):2230-2232.
2. Yi XY, Ni SF, Ghadami MR, et al. Trazodone for the treatment of insomnia: a meta-analysis of randomized placebo-controlled trials. Sleep Medicine. 2018;45:25-32.
3. Mitchell MD, Gehrman P, Perlis M, Umscheid CA. Comparative effectiveness of cognitive behavioral therapy for insomnia: a systematic review. BMC Family Practice. 2012;13:40.
4. Health Canada. Summary Safety Review: Zopiclone - Next-day impairment. 2014.
5. Jaffer KY, Chang T, Vanle B, et al. Trazodone for insomnia: a systematic review. Innovations in Clinical Neuroscience. 2017;14(7-8):24-34.

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