A Novel Butyrate Generator Helps Modulate the Gut-Brain Axis: A Randomized Double-Blind Placebo-Controlled Clinical Study

Purpose: ButyraGen ® (Registered Trademark of NutriScience Innovations, LLC), generates butyrate, a short-chain fatty acid, in the small intestine without the drawbacks of conventional formulations. Butyrate has roles in metabolism, immunity, and inflammation, and has emerging relevance in gut-brain axis signaling and psychological health. This randomized, double-blind, placebo-controlled trial evaluated ButyraGen’s effects on mood and well-being. Patients and Methods: A starting cohort of 596 adults were randomized and double-blinded to receive 200 mg/day of ButyraGen or placebo for six weeks in a fully virtual study. Validated questionnaires were administered to assess changes in anxiety, depression, and functional outcomes. Analyses followed an Intent-to-Treat protocol, with Minimal Clinically Important Difference (MCID) used to identify meaningful improvements through post-hoc analyses. Results: ButyraGen significantly reduced self-reported anxiety in men, who were over twice as likely to achieve clinically meaningful improvement versus placebo. Across all participants, improvements in feelings of fear and unease were observed. No overall benefit for self-reported depression was seen, but participants without gastrointestinal disease had a twofold greater likelihood of improvement compared to placebo. Further analysis showed improvements in hopelessness and helplessness among younger adults and men. Functional improvements were also seen for reduced distraction and improved social engagement. Conclusion: These results suggest that ButyraGen may supports both psychological and physiological well-being, particularly in men, younger individuals, and those without gastrointestinal disease. Benefits began to appear within weeks two and three and were sustained through six weeks, highlighting its potential as a fast-acting intervention for both gut and brain health, indicative of the gut-brain axis connection. Keywords: ButyraGen, cognitive, digestion, butyrate, mood, psychological well-being