The Noni plant, native to Asia, Australia, and the islands of Polynesia, is a small, shrubby tree. The plant's white flowers are tubular. The fruit is yellow-greenish-white in color and large, with a pebbled surface. The ripe fruit has a characteristic cheese-like, bad odor. Noni contains many substances, including potassium. Some of these substances helps repair damaged cells in body, activate the immune system.