Intra is a pleasant tasting, a proprietary formulation of 23 time-tested and trusted botanical extracts that provide the body with antioxidants, flavonoids, lignins, polysaccharides and other health enhancing nutrients specific to each herbal extract. Intra 23 herbs – supporting Your Health …Naturally! There are many plant extracts known to support and enhance the functions of the human body – helping us to maintain optimal health and vitality. These traditional plant extracts have been used as medicine by many cultures around the world for thousands of years. They are still used today – in fact, it is estimated that over 25% of modern medicines have plant origins. Here are some of the most effective botanical extracts and their health-enhancing properties.