The First Powerful Yew Formula For A Stronger - Than - Ever Immune System! I - Aide Yew is a totally unique and powerful Yew - based immune stimulant and enhancer that combines a special proprietary blend of Montana Pacific Yew, plus clinically proven beta - glucan (a powerful antioxidant used to boost immune function), as well as zinc and selenium (profound natural immune supporters). I - Aide is ideal as a daily food supplement for excellent immune support as well as for promoting the rebuilding, enhancing and stimulating of immune function during periods of compromised immune strength.