Pomegranate juice is often touted for its health benefits because, in some clinical studies, it has been shown to be of significant benefit, especially in the prevention of heart disease. An 8-ounce (236.5 ml) glass can contain about 40% of the US Recommended Daily Allowance (RDA) of vitamin C, although many brands available in stores contain little or none because it is destroyed during pasteurization. The juice may also include vitamins A, E, and folic acid, although again this depends on its source.