... CAS No: 138-52-3 White willow extract, a common homeopathic remedy, is used to treat such ... rheumatic pain, arthritis, fevers, and menopause. White willow extract comes from the white willow tree. It is also known by its Latin ... , an astringent, Control arthritis discomforts. Some arthritis sufferers taking white willow bark have experienced reduced swelling and inflammation, and eventually increased ...