#394 ‒ Sleep pharmacology: the role of medications in healthy sleep, the promise of emerging therapies, and the evidence for common sleep supplements

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In this episode, Peter dives into the pharmacology of sleep, exploring where sleep medications fit within the broader framework of achieving healthy, restorative sleep. He explains why sleep is a biological imperative, why behavioral and environmental interventions must remain the foundation of good sleep, and how medications can serve as useful tools when carefully matched to a person's specific sleep problem. Peter examines the major classes of prescription sleep medications, including how they work, their effects on sleep architecture, their duration of action, side effects, and risks of tolerance and dependence. He also discusses the dangers of using sleep drugs without a clear understanding of the underlying problem being treated, the role of medications as short-term bridges during periods of acute stress, pain, or anxiety, and the promise that newer drugs like DORAs may hold for Alzheimer's prevention in high-risk individuals. Finally, Peter reviews the evidence for select off-label medications and supplements commonly used for sleep.

We discuss:

• The biological foundations of sleep, the major drivers of sleep dysfunction, and the role sleep medications can play when appropriately matched to specific sleep problems [1:00];
• Sleep hygiene, circadian alignment, and the medical causes of insomnia: building the foundation for effective sleep treatment [7:15];
• Understanding insomnia: hyperarousal, CBT-I, paradoxical insomnia, and why different sleep problems require different treatments [12:45];
• The difference between sedation and physiologic sleep: sleep architecture, restorative sleep stages, and matching medications to specific sleep problems [17:00];
• Benzodiazepines for insomnia: mechanisms, effects on sleep architecture, and the risks of long-term use [18:45];
• Z-drugs for insomnia: how Ambien, Sonata, and Lunesta work, and the ongoing risks of sleep medications targeting GABA systems [23:00];
• Dual orexin receptor antagonists (DORAs) and the future of sleep medicine: orexin signaling, sleep architecture, and the emerging connection between sleep and Alzheimer's disease [27:15];
• Melatonin for circadian timing: how timing signals differ from sedatives in the treatment of sleep disorders [36:30];
• Trazodone for insomnia: preserving deep sleep while minimizing the risks of traditional sedative-hypnotics [42:00];
• First-generation antihistamines for sleep: short-term sedation, anticholinergic risks, and concerns about long-term cognitive health [44:00];
• Sleep supplements and the evidence behind them: glycine, magnesium, ashwagandha, phosphatidylserine, and more [45:45];
• Takeaways: supplement quality, individualized sleep treatment, and the importance of matching interventions to the biology of insomnia [52:00]; and
• More.

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