More evidence is necessary to prove the effectiveness of neem as a health supplement, as of 2015. However, its uses include treating dental plaque, fevers, skin conditions and breathing problems, according to WebMD.
People who live in tropical climates sometimes chew on neem twigs instead of brushing their teeth. This should be done with caution, however, as neem twigs commonly develop fungi within two weeks of harvesting, notes WebMD. Neem bark can treat fevers, upset stomach, ulcers and malaria. Uses of the fruit include remedies for skin conditions such as leprosy, hemmorhoids and wounds, and the neem flower may help treat phlegm and intestinal worms.