ARA-Larix RX-Immune by Nature"s Plus 30 Tablet ARA-Larix Rx-Immune is a natural organic arabinogalactan supplement that bolsters the body"s natural defenses while cleansing and reinforcing digestion for maximal health. ARA-Larix Rx-Immune"s focused internal activity promotes the robust maintenance of general well-being. ARA-Larix Rx-Immune"s action is naturally long lasting due to its soluble fiber content. ARA-Larix Rx-Immune is a uniquely specialty formula designed for any individual concerned with promoting healthy immune function.