White willow bark is a tree native to Europe and Asia. The name "white willow" comes from the color of the leaves, which are covered with fine white hairs. The use of white willow bark medicinally goes far back. Ancient Egyptians used white willow for inflammation. The Greek physician Hippocrates wrote about white willow's medicinal uses in 5th century B.C. In 1829, scientists in Europe identified what was believed to be the active ingredient in white willow bark-a compound called salicin. Public demand grew
rapidly. Extracting salicin from herbs was considered to be expensive and time-consuming, so a synthetic salicylic acid version was developed in Germany in 1852 and quickly became the treatment of choice (salicin is converted in the body to salicylic acid).
The problem was that white willow bark extract was harder on the stomach. At therapeutic doses, people using the synthetic salicyclic acid developed stomach ulcers and bleeding. The German company Bayer eventually created a synthetic, less harsh derivative of salicylic acid, called acetylsalicylic acid (ASA), and mass-produced it under the name aspirin. Despite this, aspirin is still known for irritating the stomach
 

1. white willow bark extract has the same effect on the body as aspirin without any of the side effects.
2. white willow bark extract can Anti-inflammation, fever relief, an analgesic, Relieve acute and chronic pain, including headache, back and neck pain, muscle aches, and menstrual cramps.
3. white willow bark extract Anti-rheumatism and function of constringency, an astringent, Control arthritis discomforts. Some arthritis sufferers taking white willow bark have experienced reduced swelling and inflammation, and eventually increased mobility, in the back, knees, hips, and other joints.

1.White willow bark extract Applied in cosmetics, it can inhibit whelk and relieve swelling and pain.
2.White willow bark extract Applied in pharmaceutical field, it is mainly used to curing fever, colds and infections.
3.Willow extract powder Applied in feed additive, it is mainly used as feed additive for diminishing inflammation and promoting digestion.