Verified Evidence Study for the Enhanced Brew
How a functional coffee brand used a three-arm randomized controlled trial and continuous wearable biometrics to generate clinically-verified, marketing-ready sleep evidence.
Spreadsheets. PDFs. No story.
The Challenge
The brand behind the Enhanced Brew had a loyal customer base and a product people loved—but needed more than testimonials. They required rigorous, controlled clinical evidence to substantiate sleep and wellness claims, satisfy retailers, and stay ahead of FTC scrutiny.
This three-arm RCT provides the strongest controlled evidence to date for the sleep and wellbeing benefits of the functional coffee studied. The dual convergence of significant subjective and objective sleep improvements is the headline finding of this study.
Turning Customers into Verified Proof
The Input
189 enrolled participants wore Oura Ring continuously and consumed their assigned beverage daily for 8 weeks across three parallel arms.
The Capture
Reputable's HIPAA-secure platform collected 20,000+ daily wearable data points alongside validated PROMIS-calibrated PRO surveys at three timepoints.
The Output
Significant sleep findings were transformed into verified, FTC-compliant marketing claims and a publication-ready clinical report.
The Key Findings
The Enhanced Brew was the only arm to show statistically significant improvements in both subjective sleep quality and objective wearable biometrics—a dual confirmation no control group matched.
Sleep Refreshingness
Patient-Reported Outcome · PRO Survey"Significant improvement by Day 56—no change at midpoint, then meaningful gain—consistent with the cumulative adaptogenic mechanism of lion's mane."
Sleep Efficiency
Oura Ring Wearable · Objective Data"The Enhanced Brew was the only arm to significantly improve sleep efficiency. Neither caffeinated coffee nor decaf control showed any meaningful change."
Time Awake at Night
Oura Ring Wearable · Objective Data"Participants in the Enhanced Brew arm spent significantly less time awake during the night by end of study—nearly 8 fewer minutes of wakefulness per night."
Fatigue Reduction
PROMIS Survey · Directional Trend"Directional improvement in fatigue (−0.216) trending more favorably than caffeinated coffee, possibly reflecting smoother energy delivery via L-theanine co-administration."
GI Comfort Reports
Spontaneous Qualitative · Multiple Participants"Multiple participants independently reported reduced IBS symptoms, improved bowel regularity, and less stomach discomfort—without being prompted by survey questions."
Safety Profile
Adverse Events · 8-Week Period"Only 11.4% of Enhanced Brew participants reported any adverse experiences over the full 8-week study. No serious adverse events were observed in any study arm."
Sleep Claims
Dual PRO + wearable verified
Oura Ring Data
Continuous biometric tracking
Retailer Decks
Data-backed sales slides
RCT Report
Publication-ready findings
Real Participants, Real Reports
Selected spontaneous qualitative reports from Enhanced Brew study completers. These are illustrative examples—not representative of the full sample.
Energy & Focus
Enhanced Brew Study Completer"More energetic and easier to concentrate."
GI Calm & Comfort
Enhanced Brew Study Completer"I felt more calm after drinking—not jittery like I do with other forms of caffeine. I also felt my GI health was better. I tend to sometimes have issues with symptoms of IBS and felt that these symptoms were better when I consumed the product."
GI Regularity
Enhanced Brew Study Completer"I felt that my stomach issues became less noticeable and my bowel movements became more regular."
No Stomach Pain
Enhanced Brew Study Completer"Alert. No stomach pain with gastritis."
Sleep & Digestion
Enhanced Brew Study Completer"BM's were good! Deep sleep was also good."
Appetite & Energy
Enhanced Brew Study Completer"I had more energy throughout the day. My appetite was also curbed and I had less sugar cravings."
Exceptional compliance across the 8-week study reflects Reputable's frictionless participant experience—powered by HIPAA-secure data collection, automated SMS and push notification reminders, and continuous Oura Ring syncing.
The Impact
Retail Ready
Armed with a three-arm RCT and verified biometric data to prove efficacy to buyers and close retail partnerships.
Regulatory Safety
Claims backed by dual-confirmed real-world evidence to mitigate FTC risk and stay compliant with FDA structure-function guidelines.
Speed to Market
From enrollment to verified, publication-ready clinical findings—in weeks, not the years of traditional research.
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