Gina Johnson
Sleep and psychiatric disorders are closely linked, with insomnia being one of the signs of depression. While antidepressants are widely prescribed for insomnia, they are not licensed for this use, and evidence of their effectiveness is uncertain. Hypnotic medications such as benzodiazepines and 'Z' drugs are licensed for sleep promotion, but they can induce tolerance and dependence. Selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) have been found to improve subjective sleep measures in patients with depression. Other antidepressants that can help with sleep include nefazodone, trazodone, mirtazapine, doxepin, amitriptyline, and trimipramine. It is important to note that the best medication for insomnia may vary for each individual, and it is always advisable to consult a healthcare professional before starting any new medication.
| Characteristics | Values |
|---|---|
| Antidepressants that can help with sleep | Mirtazapine, Trazodone, Doxepin, Trimipramine, Amitriptyline, Bupropion, Nefazodone |
| Over-the-counter sleep aids | Diphenhydramine, Doxylamine, Melatonin |
| Prescription sleep aids | Zolpidem (Ambien), Eszopiclone (Lunesta), Zaleplon (Sonata), Diazepam (Valium), Alprazolam (Xanax), Triazolam (Halcion), Ramelteon (Rozerem) |
| Limitations and side effects | Diphenhydramine worsens cognition and raises the risk of dementia with chronic use; Trazodone can cause daytime fatigue, reduced recovery rates in depression, and dry mouth; SSRIs can cause insomnia and worsen sleep quality |
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What You'll Learn
Antidepressants for insomnia
Antidepressants are widely prescribed for insomnia, despite not being licensed for this use and having uncertain evidence for their effectiveness. Hypnotic medications such as benzodiazepines and 'Z' drugs are more commonly used to treat insomnia, but they can induce tolerance and dependence. This has driven the use of alternative medications such as antidepressants.
The relationship between depression, insomnia, and treatment is complex. Studies have shown that selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) improved subjective sleep measures in patients with depression. However, TCAs are known to have significant tolerability problems and can be fatal if taken in overdose. Other antidepressants that have shown positive effects on sleep include nefazodone, trazodone, and mirtazapine. Mirtazapine has sedative effects at lower doses (15 mg and below) but may not effectively treat depression at this dose. Trazodone also has limitations, as its sedative effects tend to wear off over time, and it comes with risks of daytime fatigue and dry mouth, which can interfere with sleep.
For patients with depression and comorbid insomnia, the American Academy of Sleep Medicine recommends adding a low-dose, sedating antidepressant if not contraindicated. Low-dose trazodone, mirtazapine, doxepin, amitriptyline, or trimipramine may be given in addition to another full-dose antidepressant. However, it is important to note that SSRIs can cause insomnia and worsen sleep quality in some individuals. Bupropion, on the other hand, has been found to have neutral or positive effects on sleep architecture.
While antidepressants can be helpful for insomnia in some cases, it is important to consult a healthcare professional for personalized advice and recommendations.
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Hypnotic medications
Nonbenzodiazepines are a newer class of hypnotics that are less toxic than their predecessors, but their comparative efficacy is still uncertain. Zolpidem, a nonbenzodiazepine hypnotic, is a good choice for treating sleep-onset insomnia as it has a rapid onset and produces no significant residual sedation in the morning. Eszopiclone is another nonbenzodiazepine hypnotic that is useful for insomnia characterised by difficulties with sleep onset and maintenance.
While hypnotic medications can be effective in promoting sleep, they should be used with caution due to their potential for dependence and other side effects. It is important to follow the recommendations of a physician and combine hypnotic medication use with other interventions, such as improving sleep hygiene and avoiding stimulants, to optimise sleep quality.
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Selective serotonin reuptake inhibitors (SSRIs)
SSRIs are sometimes used off-label to treat insomnia and other sleep disorders, especially in patients with comorbid depression. While there is limited evidence from controlled trials, some studies have shown that SSRIs can improve subjective sleep measures in patients with depression and insomnia. It is important to note that the relationship between depression, insomnia, and treatment is complex, and the effectiveness of SSRIs for sleep may vary from person to person.
SSRIs are typically taken orally in the form of tablets, capsules, or liquid solutions, usually once a day. Each type and brand of SSRI may have its own unique side effects, and it is important to discuss these with a healthcare provider before starting treatment. Common side effects of SSRIs may include sexual dysfunction, sleep disturbances, weight changes, anxiety, and gastrointestinal issues such as nausea and vomiting.
When considering the use of SSRIs for sleep, it is essential to consult a healthcare professional for personalized advice and to carefully review the potential benefits and risks. While SSRIs may help improve sleep in some individuals, they are not a cure-all, and it may take some time to find the right treatment approach for each person's unique needs.
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Tricyclic antidepressants (TCAs)
Antidepressants are widely prescribed for insomnia, although they are not licensed for this use and evidence of their effectiveness is uncertain. Hypnotics, such as temazepam and 'Z' drugs, are the most common pharmaceutical treatment for insomnia, but they can induce tolerance and dependence.
However, TCAs share many of the problems associated with hypnotics, including tolerability issues and potentially serious side effects. They are potentially fatal if taken in overdose. Due to these issues, it is currently inadvisable to recommend the use of TCAs for the short-term treatment of insomnia.
Despite these concerns, the use of TCAs for insomnia is widespread, and they are often the treatment of choice. This may be due to concerns over the long-term use of hypnotics and the limited availability of alternative treatments such as CBT.
Some TCAs that have been found to improve sleep outcome measures include doxepin, trimipramine, and amitriptyline.
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Sleep aids
Antidepressants are also prescribed as sleep aids, particularly for individuals with insomnia and depression. While there is no single antidepressant that is most effective for treating insomnia in patients with depression, certain antidepressants can improve sleep. Selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs) have been found to improve subjective sleep measures in patients with depression. Nefazodone, trazodone, and mirtazapine (Remeron) are also antidepressants that can enhance subjective sleep ratings compared to placebo, SSRIs, or TCAs. Mirtazapine, in particular, has sedative effects at lower doses (15 mg and below), aiding sleep, but may not be as effective in treating depression at these doses. Trazodone also has its limitations, as its sedative effects tend to wear off over time, and it may cause daytime fatigue and dry mouth.
Bupropion, an antidepressant, is surprisingly favourable for sleep. While it is activating during the day, it does not cause more insomnia than SSRIs and has neutral or positive effects on sleep architecture. Additionally, in patients with restless legs syndrome (RLS), bupropion appears to be an effective treatment. Mirtazapine, on the other hand, may increase the risk of RLS compared to other antidepressants.
For patients with depression and comorbid insomnia, the American Academy of Sleep Medicine recommends adding a low-dose, sedating antidepressant if not contraindicated. Low-dose trazodone, mirtazapine, doxepin, amitriptyline, or trimipramine (Surmontil) may be prescribed alongside another full-dose antidepressant. However, it is important to note that SSRIs may worsen sleep quality and cause insomnia.
While antidepressants can improve mood, they may also negatively impact sleep. Therefore, it is crucial to select the right antidepressant that works well with specific sleep disorders.
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Frequently asked questions
Mirtazapine, trazodone, nefazodone, doxepin, amitriptyline, trimipramine, and bupropion are some antidepressants that can help with sleep. While they are not antidepressants, other medications that can help with sleep include zolpidem (Ambien), eszopiclone (Lunesta), zaleplon (Sonata), and ramelteon (Rozerem).
While trazodone can cause daytime fatigue, dry mouth, and reduced recovery rates from depression, mirtazapine carries a risk of weight gain and RLS. SSRIs may worsen sleep quality and cause insomnia. Medications like temazepam and 'Z' drugs can induce tolerance and dependence.
Apart from medication, relaxation, deep breathing, and regular exercise (not too close to bedtime) can help improve sleep. It is also important to avoid looking at screens before bedtime.
