
Trazodone and mirtazapine are both antidepressants used to treat insomnia and other sleep disorders. While both drugs have been proven effective for treating insomnia, individual experiences vary. In this article, we will compare and contrast the two drugs, exploring their mechanisms, efficacy, and side effects to determine which one works better for sleep.
| Characteristics | Values |
|---|---|
| Common starting dosage | Trazodone: 150 mg per day, sometimes divided into multiple doses per day; Mirtazapine: 7.5 mg or 15 mg, can be prescribed up to 45 mg |
| Time to feel the full effects | Trazodone: 2 weeks or more; Mirtazapine: 4 to 8 weeks, but can take up to 2 months |
| Effectiveness | Both drugs have been proven effective for insomnia, with Mirtazapine being better tolerated by users |
| Side effects | Trazodone: sleepiness, dry mouth, dizziness, headache, muscle pain, and shaking; Mirtazapine: drowsiness, decreased will to live, weight gain, and abnormality in digestion |
| Rating | Trazodone: 6.3 out of 10; Mirtazapine: 6.8 out of 10 |
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What You'll Learn
- Effectiveness: Mirtazapine is more effective than trazodone, according to a double-blind study
- Dosage: The common starting dosage for trazodone is 150 mg per day, while mirtazapine is 7.5–15 mg
- Time to work: Trazodone takes two weeks or more to feel the full effects, while mirtazapine can take up to eight weeks
- Side effects: Trazodone has more side effects than mirtazapine, including muscle pain and shaking
- User reviews: Mirtazapine has a higher average rating than trazodone, at 6.8 out of 10 from 1,962 reviews

Effectiveness: Mirtazapine is more effective than trazodone, according to a double-blind study
Mirtazapine and trazodone are both antidepressants used to treat major depressive disorder and insomnia or sleep disorders. They are both effective in improving sleep quality and cognitive functioning. However, according to a double-blind study, mirtazapine is more effective than trazodone.
Mirtazapine is a first-choice antidepressant for treating depression in adults. It is typically taken once daily at night due to its sedative effects. It is part of a class of medications called tetracyclic antidepressants, which work in the central nervous system to strengthen certain brain chemicals. In addition to improving sleep, mirtazapine may also help reduce depressive symptoms. In a study, approximately 53% of mirtazapine users reported drowsiness, and it was found to be better tolerated than trazodone. The typical dosage for sleep problems is 7.5 mg to 15 mg, but it can be prescribed up to 45 mg. Mirtazapine can take a while to reach its full effect, with some recommending at least six weeks of use.
Trazodone, on the other hand, is not a first-choice medication for depression but is sometimes prescribed off-label for insomnia. It is a serotonin antagonist and reuptake inhibitor (SARI) that works by increasing serotonin levels and blocking chemicals that interact with serotonin and other neurotransmitters affecting the sleep-wake cycle. The common starting dosage for sleep is 150 mg per day, which can be divided into multiple doses. Trazodone typically starts working within 30 minutes, and its effects last for 5 to 9 hours. While it can show results within the first week, it may take up to two weeks to reach its full effect.
While both medications are effective for sleep, individual experiences may vary. User testimonials give trazodone an average rating of 6.3 out of 10, while mirtazapine receives a slightly higher rating of 6.8 out of 10. It's important to consult a doctor to determine the most suitable medication based on one's health history and specific conditions.
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Dosage: The common starting dosage for trazodone is 150 mg per day, while mirtazapine is 7.5–15 mg
When it comes to dosage, trazodone and mirtazapine differ significantly. The common starting dosage for trazodone is 150 mg per day, although this can vary between 25 mg and 100 mg. Trazodone is often taken in multiple doses per day and tablets typically come in 50 mg, 100 mg, or 150 mg. It is important to note that trazodone is not recommended for children, teens, or those with bipolar disorder. Additionally, it should be used with caution for individuals with a history of liver or kidney issues, heart disease, or seizures.
On the other hand, the common starting dosage for mirtazapine is significantly lower, ranging from 7.5 mg to 15 mg per day, preferably taken in the evening just before sleep. Mirtazapine is typically prescribed for adults, with children's usage determined by a doctor. It is important to note that mirtazapine may cause agitation, irritability, or other abnormal behaviours in teenagers and young adults. While the drug is commonly used off-label at lower doses, it can be prescribed up to 45 mg per day.
The difference in dosage between trazodone and mirtazapine is notable, with trazodone's starting dosage being much higher. It is important to consult a healthcare professional to determine the appropriate dosage for each individual, taking into account their specific needs and conditions.
Both trazodone and mirtazapine are antidepressants that have been used to treat insomnia and improve sleep. Trazodone, approved by the FDA in 1981, is known to improve sleep quality and reduce the time taken to fall asleep. Mirtazapine, on the other hand, has been found to improve total sleep time and provide better sleep quality. While both drugs are effective, some studies suggest that mirtazapine is better tolerated by users and has fewer side effects compared to trazodone.
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Time to work: Trazodone takes two weeks or more to feel the full effects, while mirtazapine can take up to eight weeks
When it comes to the timeline for experiencing the effects of trazodone and mirtazapine, there is a notable difference between the two medications.
Trazodone typically takes two weeks or more for individuals to feel its full effects. Some people may report improvements in their sleep within the first week of taking trazodone, but it can take up to two weeks or longer to reach its maximum effectiveness. The starting dosage for sleep is usually 150 mg per day, which can be divided into multiple doses. Trazodone works by increasing serotonin levels in the brain and blocking certain chemicals that interact with serotonin and other neurotransmitters that influence the sleep-wake cycle.
On the other hand, mirtazapine can take a bit longer to exhibit its full effects. While some individuals may notice improvements in their sleep within 1-2 days of starting mirtazapine, it is recommended to give it at least six weeks to fully evaluate its effectiveness. The common dosage range for sleep problems is between 7.5 mg and 15 mg, but it can be prescribed up to 45 mg. Mirtazapine is a tetracyclic antidepressant that acts on the central nervous system to enhance certain brain chemicals, including serotonin.
The varied timelines for the drugs' full effects are important to consider when deciding between trazodone and mirtazapine for treating sleep disorders. It's worth noting that individual experiences with these medications can vary, and the efficacy of each drug depends on the patient's health history and specific conditions being treated. Therefore, it's always advisable to consult a healthcare professional to determine the most suitable treatment option.
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Side effects: Trazodone has more side effects than mirtazapine, including muscle pain and shaking
Trazodone and mirtazapine are both antidepressants used to treat major depressive disorder and sleep disorders such as insomnia. They are similar in that they both work to increase serotonin levels in the brain, which can help reduce the time it takes to fall asleep and extend sleeping time. However, they differ in terms of their side effects, with trazodone having more side effects than mirtazapine.
Trazodone is known to cause side effects such as sleepiness, dry mouth, dizziness, and headaches. In addition, trazodone can cause muscle pain and shaking, which can be uncomfortable for some users. These side effects may occur within 30 minutes of taking the medication and can last for up to 9 hours. It is important to follow the prescribed dosage and not combine doses to minimise the risk of unwanted reactions.
On the other hand, mirtazapine is generally better tolerated by users and has fewer side effects. Approximately 53% of mirtazapine users reported drowsiness after use, which is a common side effect of the medication. Mirtazapine may also cause other side effects, although these are not as well-documented as those of trazodone. It is important to note that individual experiences with these medications may vary.
While both medications can be effective for sleep, it is recommended to consult a sleep medicine expert to address the underlying causes of insomnia and to determine the most appropriate treatment option. Additionally, practical tips on healthy sleep hygiene can help address environmental and behavioural factors contributing to sleep problems.
It is always advisable to consult a doctor or healthcare professional before taking any medication to ensure it is safe and suitable for your individual needs. They will be able to provide comprehensive information on how to take the medication safely and minimise the risk of undesirable reactions.
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User reviews: Mirtazapine has a higher average rating than trazodone, at 6.8 out of 10 from 1,962 reviews
Mirtazapine has received higher ratings from users compared to trazodone, with an average rating of 6.8 out of 10 from 1,962 reviews. Trazodone, on the other hand, has an average rating of 6.3 out of 10 from 1,393 reviews. These ratings highlight that mirtazapine may be more effective for some individuals seeking to improve their sleep.
It is important to note that both drugs are FDA-approved as antidepressants, and their use for treating sleep problems is off-label. They are generally safe for adults experiencing sleep problems, but it is crucial to follow the instructions provided by a doctor to avoid any unwanted reactions.
Mirtazapine is a noradrenergic and specific serotonergic antidepressant (NaSSA) that works by increasing serotonin and norepinephrine levels in the brain while blocking histamine receptors, resulting in a sedative effect. Clinical studies have shown that it decreases sleep latency, increases deep sleep, and improves total sleep time and quality.
Trazodone, a serotonin antagonist and reuptake inhibitor (SARI), also works by increasing serotonin levels and blocking chemicals that interact with serotonin and other neurotransmitters affecting the sleep-wake cycle. It helps reduce the time it takes to fall asleep and extends sleeping time.
While both drugs have proven effective in treating insomnia, user reviews suggest that mirtazapine may be better tolerated, with fewer side effects. Trazodone has been associated with a higher frequency of somnolence and postural symptoms during the initial weeks of treatment. However, individual experiences may vary, and it is always advisable to consult a healthcare professional before starting any medication.
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Frequently asked questions
Trazodone and mirtazapine are both antidepressants primarily used in the treatment of major depressive disorder. They are also used to treat insomnia and sleep disorders.
Trazodone has more side effects than mirtazapine, including sleepiness, dry mouth, dizziness, headache, muscle pain, and shaking. Mirtazapine also causes drowsiness and may lead to other severe and long-lasting side effects.
Both medications have been proven effective for treating insomnia, with some studies showing that mirtazapine is better tolerated by users and improves total time spent sleeping. However, individual experiences vary, and the efficacy of each drug depends on the patient's health history and specific conditions being treated.































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