Botanical Name: Salix albaWillow bark works a lot like aspirin so it is often used to treat headaches, muscle pain, menstrual cramps and more. In combination with the herb's powerful anti-inflammatory plant compounds, salicin (a chemical in white willow) is thought to be responsible for the pain-relieving and anti-inflammatory effects of the herb.*These statements have not been evaluated by the Food and Drug Administration. The information provided is intended for educational purposes only. Consult a qualified healthcare practitioner for medical diagnosis or treatment.