Progesterone has an anti-inflammatory effect on the body. During menopause, progesterone levels drop through the floor, which can cause joint pain flare-ups. Vitex is the only plant proven to affect the body’s production of this hormone. A.Vogel Vitex is a highly concentrated, fast-acting product. Some people see an improvement after only a few days, but it can take up to three months to see the plant’s full effect. Until Vitex reaches full effect, A.Vogel Joint Pain Relief is a natural way to help relieve inflammation. I also recommend following the dietary advice provided in the following text on arthritis and osteoarthritis.