[sidebar]“I had not expected willow bark to prove to be such a potent analgesic,” said lead researcher Sigrun Chrubasik, MD, research coordinator at the Institute of Forensic Medicine, University of Freiberg, Germany. “For long-term treatment, willow bark is superior to aspirin and other NSAIDs (nonsteroidal anti-inflammatories) because it helps prevent cartilage destruction and has far lower risk of side effects,” says Dr. Chrubasik. “But for treatment of acute pain, aspirin or another NSAID is the better choice because it delivers more rapid relief.” The extract used in the study is not available in the US, but a version produced by Nature’s Way, containing 250 mg of white willow bark plus 200 mg of white willow bark extract standardized to 15% salicin, is equivalent to the formula used in the research, Dr. Chrubasik says. Take two to four capsules daily for pain. If you are allergic to aspirin and/or other NSAIDs, avoid taking willow bark. More from Prevention: 3 Painkillers In Your Pantry