Many proponents of 7-Day cleanses claim the ingredients used in the cleanse will purify the body, but it's important to understand the benefits before beginning a master cleanse, should you experience an allergic reaction. Noni, a type of fruit, helps to boost stamina and promote good health, while apple cider vinegar may help prevent cancer and increase weight loss. Many holistic experts claim grapefruit seed is a strong antioxidant with fat-burning capabilities. In addition, pomegranate has been proven to promote cardiovascular health and optimal cell function. In addition, echinacea has long been used to promote the immune system, and green tea extract is considered a strong anti-oxidant.