REVIEW Tangeretin(Tangeritin) is a citrus flavonoids. It has the typical flavonoid structure and contains 5 methoxyl groups. This high level of methoxylation increases the hydrophobic character of tangeretin. It has a very bitter taste. Only recently have scientists studied the biological activity of tangeretin. They found that tangeretin is readily absorbed in tissues and that it has many beneficial properties such lowering of cholesterol, anti-tumor activity and neuroprotective action.