Unclear
CBD oil
cannabidiol products. Herbs & mushrooms.
Safety: The FDA says CBD can cause liver injury.
During treatment: Can increase or decrease the effects of other medicines, according to the FDA.
- Verdict
- UnclearThere isn't enough human evidence to say either way.
- How sure
- Rung 1 · UnprovenLab or animal data only, or never directly tested in people.
The rung shows how sure the science is, not how big the effect is. How to read these ratings
Cancers affected
None shown
What the evidence shows
The FDA hasn't approved CBD to treat cancer: apart from one prescription drug, it hasn't approved any CBD product. It says CBD can cause liver injury and can make other medicines stronger or weaker. Cannabinoid medicines for chemotherapy nausea are rated separately.
What to do
Don't use it to treat cancer. Tell your care team if you use it, because of drug interactions.
Sources
To take it to your doctor, print this page.
Spotted an error? Tell us and we’ll check it against the sources.
Related
Every supplement we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.