Trial reportBrain and behavior2025
Effects of a Valerian-Hops Extract Combination (Ze 91019) on Sleep Duration and Daytime Cognitive and Psychological Parameters in Occasional Insomnia: A Randomized Controlled Feasibility Trial.
Trial report in Brain and behavior, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05684523 (Feasibility Study on the Use of Redormin® 500), which is not on this map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Feasibility Study on the Use of Redormin® 500 (Ze 91019) on Day-time Cognition and Quality of Life in People With Occasional Sleep Problems
Who cites it
1 citing paper in PubMed.
- Biological Activity of Hops (Nutrients · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
Abstract
OBJECTIVE/
backgroundThis study evaluated the feasibility of investigating the effect of a valerian and hops-based herbal medication (Ze 91019) on daytime cognitive performance, psychological parameters, and sleep measures in individuals with occasional sleep problems.
methodsA randomized, double-blind, placebo-controlled study was conducted in 40 participants over a 21-day run-in period and a 21-day treatment period. Participants used Fitbit sleep trackers and completed daily online cognitive tests (i.e., reaction time and working memory), and surveys to assess subjective psychological outcomes (i.e., cognitive performance, stress levels, tiredness, mood, quality of life, and motivation).
resultsThe study design proved feasible, with high adherence to the study protocol. Exploratory analyses revealed a statistically significant increase in sleep duration during the treatment period for participants using Ze 91019 compared to placebo (mean daily increase: 21.7 min, p = 0.019) without statistically significant effects on cognitive or psychological outcomes. Moreover, Ze 91019 statistically significantly increased the sleep duration of the shortest night in the treatment period by 48.7 minutes. The medication was well-tolerated.
conclusionsThe study design proved feasible, and Ze 91019 increased sleep duration without affecting daytime cognitive or psychological outcomes.
trial registrationThe trial has been preregistered at www. CLINICALTRIALS: gov (NCT05684523).
Indexed as
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.