- A mild form of gum disease (gingivitis). Most research shows that applying a gel containing neem leaf extract or using a neem mouthwash can reduce gingivitis in some people, but it doesn’t seem to be as helpful as chlorhexidine mouthwash and it may not be effective for people with long-standing gingivitis.
- Lice. Clinical research shows that applying a neem extract shampoo to the scalp once completely cures head lice in children.
Stomach ulcers. Early research suggests that taking neem bark extract by mouth for 10 weeks might help heal ulcers in the stomach and intestines.
Scaly, itchy skin (psoriasis). Early research suggests that taking neem extract by mouth for 12 weeks, along with daily sun exposure and the application of a coal tar and salicylic acid cream, might make the symptoms of psoriasis less severe.
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