CBD Oil
Also known as: cannabidiol, cannabidiol oil, full-spectrum CBD, hemp oil CBD, CBD extract
Effective Dosage
60-100 mg/day for adults (oral); weight-based dosing (10 mg/kg/day) used in pediatric studies
What the Science Says
CBD oil is a non-intoxicating compound extracted from the cannabis plant. Clinical trials suggest it may modestly reduce itch and anxiety, lower parental stress in families of autistic children, and temporarily improve sleep onset — though none of these effects were consistently strong across studies. At doses of 60 mg/day, it appears to reduce exercise-induced liver enzyme spikes in moderately trained athletes, and it was generally well tolerated across multiple short-term trials in adults and children.
What It Doesn't Do
Won't meaningfully clear up psoriasis — a controlled trial showed no significant improvement in skin severity scores. Not proven to treat autism spectrum disorder overall. No solid evidence it reliably fixes sleep long-term. Not a proven pain cure — endometriosis pain data comes from uncontrolled observational studies only. Don't assume 'natural' means safe at any dose — liver effects are possible, especially in sensitive individuals.
Evidence-Based Benefits
CBD oil appears generally well-tolerated across multiple populations including children with autism, people with HIV, and athletes, with mild-to-moderate adverse event profiles (PMID: 41452412, 41934259, 39630203). Some secondary benefits have been observed — including reduced itch and temporary sleep onset improvement in psoriasis (PMID: 41459647), reduced anxiety and parental stress in autistic children (PMID: 41452412), and attenuation of exercise-induced liver enzyme elevation in athletes (PMID: 39630203). Observational data suggest self-reported pain reduction in endometriosis patients using medicinal cannabis including CBD (PMID: 41566248), though controlled trial evidence for this indication is lacking due to recruitment failure (PMID: 41005282).
Weak EvidenceEffective at: No established dose — study doses ranged from 60 mg/day to 10 mg/kg/day depending on condition
Source: auto-research
Absorption & Bioavailability
Moderate — oral CBD is absorbed but subject to first-pass metabolism. A pharmacokinetics trial found roughly 50% increase in peak concentration (Cmax) with a novel gel-cap formulation vs. standard oil, suggesting formulation matters significantly. Water-soluble products may degrade in gastric fluid depending on surfactant content.
Red Flags to Watch For
- Liver enzyme activity is pharmacologically affected even at low doses (60 mg/day) — people with liver conditions or on hepatotoxic medications should consult a doctor before use
- Most human trials are small (12–80 participants) and short-term — long-term safety data is limited
- CBD can interact with other medications (e.g., hydroxychloroquine pharmacokinetics were altered in combination studies)
- Products vary widely in formulation — oil, solubilisate, full-spectrum, and isolate forms behave differently in the body
- Driving restrictions were a major barrier in one clinical trial, suggesting regulatory and safety concerns around impairment remain relevant even for CBD-only products
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06