The active ingredient in willow bark is called salicin. Salicin has been produced synthetically, but it is harder for the stomach to absorb and has led to a number of stomach problems. A gentler synthetic version was then produced and is known to users today as aspirin, but even though it is gentler aspirin still has a reputation for being an irritant on the stomach lining. Therefore, many people prefer to take white willow bark rather than the artificial version, as it more gentle on the stomach. Willow bark extract has a number of benefits including: Easing the inflammation and aches of back pain and joint pain. This includes easing the symptoms of arthritis and rheumatism. Easing fever and flu symptoms (but should not be given to children). Helping to relieve headaches and migraine. The herb can reduce the frequency of night sweats and hot flashes in those going through menopause. The bark can be applied externally to remove warts. The pain-relieving properties of the herb can help those who suffer from menstrual cramps, and the salicin can help to regulate hormones. When combined with other herbs, it is thought to be beneficial for weight loss by promoting the metabolism of fat in the body. White willow bark has been used to relieve toothaches. It has blood-thinning properties so may be beneficial for those at risk of clotting or strokes. The herb should not be used by those already taking blood thinning medication. Supplement Facts Serving Size:3 caps Servings per Container: 33 Ingredient Amount % Daily Value** White Willow Bark 1125mg