A CBD Muscle-Recovery Feasibility Trial Did Not Settle Sports-Injury Treatment
A small CBD trial reported a favorable pattern in pain and function around 48 hours after experimentally induced muscle injury. Its main value was feasibility and preliminary effect estimation, rather than establishing a proven treatment for sports injuries.
An experimental recovery model
Thirty-seven participants were randomized, and 29 completed the study. Participants used a CBD-rich hemp extract supplying 67 mg CBD per day or placebo during a 15-day protocol that included dosing before and after a quadriceps injury-induction procedure.
The participants were otherwise healthy young adults. The laboratory model does not represent every acute injury, chronic tendon disorder or postoperative recovery process.
Recovery occurred in both groups
Symptoms and functional deficits were greatest during the first one to two days and diminished by approximately 96 hours. The reported descriptive pattern favored CBD on selected pain, strength and disability measures around 48 hours.
The investigators emphasized effect sizes, precision, recruitment, blinding and suitability of outcome measures. A favorable effect-size estimate in a small feasibility sample should not be converted into a definitive population efficacy claim.
Important questions remained unanswered
No treatment-emergent adverse reactions were reported by participants, but a study of this size and duration cannot reliably estimate uncommon harms. The study did not include blood biomarkers to complement the clinical and functional observations.
Formulation, dosing before injury and natural recovery all matter when comparing this experiment with real-world treatment begun after an injury. The findings support planning a larger trial with prespecified clinical endpoints and adequate precision. They do not establish that CBD accelerates tissue healing, eliminates the need for rehabilitation or produces the same response in every athlete.
Related: Interpreting CBD treatment outcomes.
Primary research
Efficacy and safety of cannabidiol (CBD) on reducing pain and functional impairment associated with exercise-induced muscle injury: a randomized placebo-controlled feasibility trial. Journal of Cannabis Research (2026).
