ArticleFrontiers in nutrition2026
Hydrolyzed chicken extract (ProBeptigen®) on sleep quality in healthy individuals: a secondary analysis of PSQI global and component scores from a randomized double-blind trial.
Article in Frontiers in nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Background/objectives: Poor sleep is a prevalent health issue. This secondary analysis examined the effects of hydrolyzed chicken extract (ProBeptigen®) on sleep quality outcomes using data from a previously completed single-center, randomized, parallel, double-blind, placebo-controlled trial. Methods: Fifty-two healthy subjects with poor baseline sleep quality (Pittsburg Sleep Quality Index, PSQI global > 5) had been randomly assigned to receive either ProBeptigen® 670 mg ( Results: Following 4 weeks of treatment, changes in PSQI global scores did not significantly differ between the two groups. However, the improvement in the subjective sleep quality component score was significantly greater in the ProBeptigen® group compared to the placebo group ( Conclusion: This proof-of-concept secondary analysis suggests that ProBeptigen® may improve perceived sleep quality and support further prospective evaluation.
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