Cannabidiol: benefits by goal, the dosage that worked, and the supplements ranked
What the 64 human studies of cannabidiol we graded show for each goal, the dose that worked, and the products that hold it. This page is educational, not medical advice.
Cannabidiol benefits, by goal: what the studies show
Members OnlyThe top 1 of 1 goals
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Stress and Calm | No effect in studies 64 studies, 14 showed an improvement, 20 found none, 12 pooled analyses | 64 | 32 mg |
Cannabidiol supplements, ranked by the human studies
Members OnlyNone in our catalog yet
No product in our catalog holds it at a dose that counts yet.
Cannabidiol dosage: how much per day
The dose that worked in the studies, and the upper limit
The studies taken by mouth that showed an improvement gave 32 to 600 mg a day.
Biohacker panel
Members OnlyWhat our 10 biohackers say about cannabidiol
Dr. Mark Hyman, 3 Sep 2025: Mentions that GW Pharmaceuticals has an approval for CBD (cannabidiol) for pediatric epilepsy syndromes like Lennox-Gastaut and Dravet syndrome, noting that families had discovered its effectiveness in stopping seizures in their children. Source
Ben Greenfield, 18 Feb 2017: States that CBD (cannabidiol from hemp) is the most important supplement in the last 30 years for stabilizing glutamate receptors, lowering neuroinflammation, and stimulating endocannabinoid production, making it an excellent adjunct to any detox program or for managing toxic exposure. Source
Dave Asprey: Introduces cannabidiol (CBD) as one of the most controversial supplements on the market today and discusses its benefits. Source
Questions people ask
Members OnlyAnswered from the figures on this page
How much cannabidiol per day?
The studies taken by mouth that showed an improvement used 32 to 600 mg a day.
Can I take cannabidiol with my meds?
Some supplements can change how meds work or are absorbed. Members have every product checked against the meds in their Health Profile before it joins their protocol.
Educational, not medical advice. Figures come from the human studies on PubMed we have graded; a study counts for a form when it names the form it used. Updated as new studies arrive. How we grade →
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