Constipation
Only MALE spots available. Studying magnesium and potassium citrate for its effects on constipation.
Join a Study
Be part of history's largest studies on supplements
- Receive a supply of a study product at no cost to you
- Receive a PERSONALIZED HEALTH REPORT with insights when you complete the study
Get invited to our studies!
Select your wellness needs:
In Collaboration with Faculty From
Open Studies
We also welcome you to subscribe to be the first invited to new studies.
Physical Performance
Only MALE spots available. Studying Ubiquinol (active form of CoQ10) for its effects on fatigue and physical performance. Biomarkers include overall inflammatory testing via finger prick bloodwork.
Energy
MALES ONLY - Studying NR, the precursor to NAD+, with neurocognitive testing.
Histamine Intolerance
Do certain foods give you digestive issues AND other symptoms like headache, brain fog, or flushing? Studying Pea Sprout derived DAO, a naturally occurring enzyme involved in the breakdown of histamine, and its potential effects on digestive wellness.
Dog Anxiety
Studying whether a natural postbiotic supplement can support calmer behavior in dogs. If your dog is spayed/neutered, weighs 23–80 lbs, 1–12 years old, and shows signs of anxiety, your dog may be eligible.
Upper GI Health
Do you have indigestion or stomach aches? Studying Mānuka Honey for its potential effects on upper GI health.
GI Quality of Life
Are GI issues impacting your quality of life? Studying a fermented prebiotic bioidentical to human milk bioactives lactoferrin and oligosaccharides for its potential effects on GI health.
Gut Health & Mental Health
Only MALE spots available. Studying prebiotics in history's largest clinical trial on the gut microbiome, stress and feelings of anxiety. Biomarkers include gut microbiome sequencing if you complete all 4 stool samples and clinical vital signs taken from facial blood flow scanning. Some participants will also receive proteomic testing and continuous glucose monitors.
Open to U.S. adults ages 21–80, experiencing stress or feelings of anxiety. Residents of NY, NJ, RI, AK, HI are not eligible due to biomarker restrictions.
Where Wellness Leaders Turn for Evidence
How the Study Works
1
Eligibility & opt-in
The study is completely virtual - all you need is internet access on your phone or computer!
2
Product shipped to your door
If you are eligible, we will mail you a supply of health product that is lab-tested to be pure and contaminant-free.
3
Weekly check-ins via survey
Each week, you will answer short surveys about your health and study product.
4
Final health report & insights
Receive a personalized health report when you complete the study.
Free tested health product
Tested with diverse, representative populations
Personalized health insights
Contribute to scientific breakthroughs
Support equity in wellness research
Making a difference, one study at a time
For each week a volunteer participates in our study, we donate to Vitamin Angels to provide essential supplements to prevent a malnourished child from permanent blindness and help expectant mothers reduce birth defect risks in their babies.
Our Radicle Team
We are passionate doctors and public health trailblazers on a mission to revolutionize healthcare!
As featured in
Our Volunteers’ Impact
Since 2020, Radicle has conducted placebo-controlled trials with nearly 100,000 participants, delivering clinical-grade insights on wellness products.
~100k
Radicle Volunteers
200+
Products Tested
Questions & Answers
Find quick answers to common questions about Radicle’s studies, process, and platform.
“We’re advancing wellness through inclusive, virtual science.”
Dr. Jeff Chen, MD
Co-founder, Chief Executive Officer
Co-founder, Chief Executive Officer
Pelin Thorogood, M.Eng, MBA
Co-founder, Executive Chairwoman
Co-founder, Executive Chairwoman
