The Amazing Neem Tree
Video from: youtube.com
Neem (Azadirachta indica) has worldwide medicinal and agricultural applications as a non-toxic alternative to synthetic chemicals for both curing and preventing disease.

People value neem as a natural insect repellent and pesticide, they use it for skin care and skin disorders, and many also take neem leaves internally. Neem oil is used on humans, on animals, and on plants, for a huge range of different problems and diseases.
These are not just folk tales. Neem is the most heavily researched herbal remedy in India. Scientists have identified over 150 active substances in neem, and many of those proved to be as effective in laboratory studies as the folklore claimed they would be.
US companies tried to obtain patents for neem, and the patents were revoked.
The Medicinal Uses of Neem Oil, Leaf and Bark:
INSECTS (eg Head Lice, Whitefly, Weevil, Caterpillars, Fleas, Moths), WORMS, FUNGI (eg Athletes Foot, Yeast Infection), BACTERIA (eg Leprosy, Tuberculosis) and VIRUS (eg Malaria, Flu), ANTIPATHOGEN, IMMUNO-MODULATOR, ANTICANCEROUS, ANTIVIRAL, ANTIFUNGAL, ANTIALLERGEN, ANTIDIABETIC, CNS EFFECT, ANTIHEPATOTOXIC (liver), WOUND HEALING, CARDIO-VASCULAR, SKIN DISEASES (eg eczema, psoriasis), DENTAL CARE, HAIR CARE, ANTI-HEMORRHOIDS, ANTI-PYRETIC (fever), ANTI-HISTAMINE, ANTI-ARTHRITIC, ANTI-INFERTILITY, CONTRACEPTIVE, ANTI-OXIDANT, ANTI-LEPROTIC, AGRICULTURAL Uses: STORAGE OF GRAINS, WOOD, FISHERIES, PESTICIDE (kills Threadworms (Nematodes), repels slugs and snails, but is beneficial for spiders, bees, wasps, ladybirds, birds, bats and earthworms), ANTI-AFLATOXIN (toxin produced by fungus on many common commercial crops such as cotton), FERTILIZER, FORESTRY Uses: improvement of soil, wind breaker, mulching, HOUSEHOLD: pest repellent, fuel, soap PETS: wash your dog or cat with neem soap or a neem shampoo, and you'll discourage biting insects, ticks and fleas, ringworm, mange mites, any skin disorders or fungal infections.