According to a 2006 warning by the US Food and Drug Administration, XanGo's distributors had illegally used marketing materials to promote mangosteen juice claiming more than 20 human health benefits, including "anti-inflammatory," "anti-microbial," "anti-fungal," "anti-viral," "anti-cancer," "anti-ulcer," "anti-hepatotoxic," "anti-rhinoviral," and "anti-allergic" effects.