[Effects of antidepressants on sleep]

Area of Science:

• Pharmacology of sleep disorders
• Neuroscience of mood disorders

Context:

• Insomnia and depression significantly impair quality of life and increase cardiovascular risks.
• Both conditions and some antidepressant medications negatively impact sleep architecture.

Purpose:

• To review the effects of various antidepressants on sleep physiology.
• To guide the selection of antidepressants for treating insomnia, with or without depression.

Summary:

• Antidepressants vary in their effects on sleep; some improve sleep continuity and structure, while others disrupt it.
• Selective H1-antagonists and drugs that inhibit cholinergic neurons promote sleep.
• Certain tricyclic antidepressants (trimipramine, amitriptyline) and paroxetine show sleep benefits, but have limitations.
• Mirtazapine is a potent sleep promoter but can increase appetite; trazodone may cause next-day drowsiness.

Impact:

• Informs clinical practice for managing insomnia and depression, prioritizing sleep-promoting antidepressants.
• Highlights the need for individualized treatment strategies based on drug-specific effects on sleep and mood.
• Suggests that lower antidepressant doses may be sufficient for insomnia without comorbid depression.