Indole Forté™ is a rich source of dietary indoles, a class of phytochemical compounds provided by cruciferous vegetables. Researchers believe many of the health benefits conferred by crucifers such as broccoli, cabbage, cauliflower, and kale are attributable to protective effects exerted by indoles. Indoles play an important role in modulating the activity of cell receptors as well as beneficially influencing the metabolism of steroid hormones such as estrogen.