Orexin antagonists look safer than old sleeping pills for falls

Design

Systematic review and meta-analysis (10 randomised trials, 9 observational studies)

Population

183,595 participants using dual orexin receptor antagonists versus non-users

Primary outcome

Falls and fractures

Effect

Falls odds ratio 0.76 (0.56-1.04) overall, 0.59 (0.35-0.98) in randomised trials; fractures 1.05 (0.94-1.18)

Insomnia is common in older adults, and the usual hypnotics, benzodiazepines and Z-drugs, are well-established fall risks. Dual orexin receptor antagonists (DORAs) are a newer class, and this meta-analysis of nearly 184,000 people assessed whether they carry the same hazard.

Across 19 studies (10 randomised, 9 observational), DORA use did not increase falls compared with non-use (odds ratio 0.76, 95% CI 0.56 to 1.04), and the randomised data alone suggested fewer falls (odds ratio 0.59, 95% CI 0.35 to 0.98). There was no association with fractures (odds ratio 1.05, 95% CI 0.94 to 1.18).

For practice this supports preferring a DORA over a benzodiazepine or Z-drug when a hypnotic is genuinely needed in an older adult, as part of insomnia care that still leads with sleep hygiene and cognitive behavioural therapy. The caveats are real: event rates were low, the analysis did not reach its optimal information size, and data specifically in the oldest and frailest patients remain limited.

• Meta-analysis of 19 studies (183,595 people) on dual orexin receptor antagonists and falls or fractures.
• DORAs did not increase falls (odds ratio 0.76), and randomised data suggested fewer falls (odds ratio 0.59).
• No association with fractures (odds ratio 1.05).
• Prefer a DORA over a benzodiazepine or Z-drug when a hypnotic is needed in an older adult.
• Still lead insomnia care with sleep hygiene and cognitive behavioural therapy.

Why it matters

It offers a hypnotic that appears to avoid the fall risk that makes benzodiazepines and Z-drugs so hazardous in older people.

Don't overread it

Event rates were low and the optimal information size was not met, with limited data in the oldest and frailest, so this suggests rather than proves DORAs are safer for falls.

The statistics, in plain English

The overall falls odds ratio (0.76) crosses 1.0, so no increase is clear but a reduction is not proven; the randomised-only estimate (0.59) just reaches significance, and the analysis fell short of the event count needed for certainty, especially in the oldest patients.

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