NCT07214428

Effects of Grape Powder on Psychological Distress and Gut Microbiota in College Students

Effects of Grape Powder on Psychological Distress and Gut Microbiota in College Students (FTGP2025)

• Status: Active Not Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (estimated)
• Sponsor: Rutgers, The State University of New Jersey · Academic / Other
• Sex: All
• Age: 18 Years – 30 Years
• Healthy volunteers: Accepted

Summary

The goal of this trial is to investigate the effect of freeze-dried table grape powder (FTGP) on psychological distress and gut microbiota in college students. The main questions it aims to answer are: Does FTGP reduce anxiety, depression, and perceived stress? Does FTGP improve the gut microbiota? Researchers will compare FTGP to a placebo to see how FTGP affects psychological distress and gut microbiota. Participants will: Drink a daily supplement containing FTGP or a placebo for 4 weeks. Record consumption of grape powder or placebo in a compliance log. Complete surveys and provide stool samples. Three in-person visits.

Conditions

• Gut Microbiota
• Psychological Distress

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	freeze-dried table grape powder	48g freeze-dried table grape powder/day for 4 weeks
DIETARY_SUPPLEMENT	Placebo	48g placebo/day for 4 weeks

Timeline

• Start date: 2025-10-20
• Primary completion: 2025-12-24
• Completion: 2026-05-30
• First posted: 2025-10-09
• Last updated: 2026-01-15

Locations

1 site across 1 country: United States