Actually, it's a fact that pharmaceutical aspirin was originally created from a chemical very similar to one found in white willow bark. Weeping Willow is a member of the White Willow family and an excellent source of methyl salicylate and medical research shows that this chemical in white willow not only reduces fever and relieves pain and inflammation but also may help prevent heart attack, stroke, digestive tract cancers and migraine headaches....
(Thanks to Healing Herbs and Natural Medicine)