Evidence-graded · Supplements & Practices
Does it actually work? Every intervention, graded A to F.
A rigorous, plain-language database that grades supplements and behavioral practices — breathwork, meditation, exercise, sleep — side by side for cognition, focus, stress, and sleep. The grade reflects the strength of the evidence, not the size of the promise.
The evidence scale
Strength of evidence — not effect size.
Grades weigh study design, sample size, replication, effect size, and recency. Read the full method.
Why EvidencedBy
Supplements and practices
Most databases only cover pills. We put breathwork, meditation, exercise, and sleep on the same graded footing.
Head-to-head comparisons
Not just “does creatine work?” but “creatine or box breathing for focus?” — with a verdict and a side-by-side card.
Grades, not vibes
Every outcome earns an A–F grade from study design, sample size, replication, effect size, and recency.
In the database
6 interventions · 3 categories
- B-→Ashwagandha (Withania somnifera)supplement · stress · 1 outcome
- A-→CBT-I (Cognitive Behavioral Therapy for Insomnia)practice · sleep · 1 outcome
- C→L-Theanine (alone, without caffeine)supplement · focus · 1 outcome
- C→Magnesium Bisglycinatesupplement · sleep · 1 outcome
- B→Mindfulness Meditation (Focused Attention)practice · focus · 1 outcome