What is White Willow Bark?

Sources

Biegert C et al. "Efficacy and safety of willow bark extract in the treatment of osteoarthritis and rheumatoid arthritis: results of 2 randomized double-blind controlled trials." Journal of Rheumatology. 31.11 (2004):2121-30.

Boullata JI et al. "Anaphylactic reaction to a dietary supplement containing willow bark." The Annals of Pharmacotherapy. 37.6 (2003): 832-5.

Chrubasik S et al. "Treatment of low back pain exacerbations with willow bark extract: a randomized double-blind study." American Journal of Medicine. 109.1 (2000):9-14.

Khayyal MT et al. "Mechanisms involved in the anti-inflammatory effect of a standardized willow bark extract." Arzneimittelforschung. 55.11 (2005):677-87.

Krivoy N et al. "Effect of salicis cortex extract on human platelet aggregation." Planta Medica. 67.3 (2001):209-12.

Schmid B et al. "Efficacy and tolerability of a standardized willow bark extract in patients with osteoarthritis: randomized placebo-controlled, double blind clinical trial." Phytotherapy Research. 15.4 (2001) 344-50.

Schmid B et al. "Pharmacokinetics of salicin after oral administration of a standardised willow bark extract." European Journal of Clinical Pharmacology. 57.5 (2001):387-91.