Unclear
Neem
Azadirachta indica leaf, bark and oil. Herbs & mushrooms.
Also called or includes: Azadirachta indica, Neem oil, Neem leaf juice cancer cure
Safety: Swallowing neem oil has caused severe poisoning in children and adults, with vomiting, seizures and vision loss; some cases ended in coma or death.
- 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 in people
What the evidence shows
Neem extracts slowed cancer cells in lab studies and reduced stomach tumors in animals, but Memorial Sloan Kettering says no human studies show it is an effective cancer treatment.
What to do
Don't take it for cancer, and never swallow neem oil.
Sources
To take it to your doctor, print this page.
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Related
Every supplement we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.