In the time of Hippocrates, willow bark had begun its use medicinally. Patients were given the bark to chew in an effort to reduce inflammation and fever. The white willow contains a chemical similar to acetylsalicylic acid, or aspirin, called salicin. This salicin was even used to make aspirin back in the 1800’s.
The Willow Plant
There are a number of different willow trees and shrubs. These are native to parts of Asia, North America and Europe. Some of these are the white willow, Salix alba, and the weeping willow, Salix babylonica. Others include the pussy willow, Salix nigra, and the purple willow, Salix purpurea.
Uses
It is primarily used as a pain reliever and an inflammation reducer. There are some people that use it as an antiseptic, antioxidant, fever reducer, and as an immune system booster. Typical conditions where willow bark is a useful supplement are headaches, osteoarthritis, low back pain, flu, cramping, tendonitis, and bursitis.
Dosage
Just like with aspirin, willow bark should not be given to children for fear of developing a rare illness called Reye syndrome. In adults there are general guidelines:
Tincture – 1:5 ratio, 30% alcohol, up to 6 milliliters three times a day Powdered or liquid – up to 240 milligrams per day Dried herb for tea – up to 2 teaspoon dried bark, 8 ounces water, boil 15 minutes, steep 1/2 hour, three to four cups a day.
These dosages are just general guidelines off the University of Maryland Medical Center website. Ask your doctor if the supplement is right for you and at what dosage.
Side Effects
While usually mild, side effects can be ulcers, stomach bleeding, and stomach upset. If there is an overdose there may be vomiting, nausea, skin rash, inflamed kidney, or tinnitus.
Willow bark is not recommended for pregnant women and those that are breast feeding. Always ask your doctor before starting any type of supplement. The FDA can only attest to their general safety. Toxicities with herbal remedies can and do occur.
Source: University of Maryland Medical Center, Willow Bark
http://www.umm.edu/altmed/articles/willow-bark-000281.htm