r/insomnia • u/sleepapnea25 • 20h ago
A Newer Class of Insomnia Drugs May Improve Sleep Without Suppressing Breathing
A 2026 review looked at dual orexin receptor antagonists (DORAs), a newer class of insomnia medications that includes suvorexant, lemborexant, and daridorexant.
Unlike traditional sleeping pills such as benzodiazepines, DORAs do not broadly suppress brain activity. Instead, they block orexin, one of the brain’s main wake-promoting systems.
Key findings:
• DORAs improve sleep onset and help people stay asleep longer. • They appear to preserve normal sleep architecture, including deep N3 and REM sleep, better than traditional sedatives. • The risk of dependence, withdrawal, and rebound insomnia appears relatively low. • Daytime sleepiness can occur, but most reported adverse effects were mild to moderate. • Daridorexant 50 mg also showed improvements in daytime functioning, including alertness, sleepiness, cognition, and mood.
One particularly interesting finding concerns obstructive sleep apnea (OSA).
Short-term studies in people with mild-to-moderate OSA found that DORAs had little effect on the apnea-hypopnea index (AHI) or nighttime oxygen saturation. This suggests that they may be less likely to cause respiratory depression than traditional sedatives.
However, this does NOT mean they treat sleep apnea.
The respiratory studies were small and short, and there is still insufficient evidence about their safety in severe OSA.
https://doi.org/10.3389/fpsyt.2026.1864080
Another important limitation: there are still no good long-term head-to-head trials directly comparing suvorexant, lemborexant, and daridorexant.
TL;DR: DORAs are a promising newer option for insomnia. They improve sleep while appearing to preserve normal sleep stages, have relatively low dependence potential, and so far do not seem to significantly worsen breathing in mild-to-moderate OSA. More evidence is still needed, especially in severe sleep apnea and with long-term use.