I3C SAPTargeted nutraceutical therapy. Indole 3 carbinol (I3C) is a phytochemical derived in high concentrations from the Brassica family of vegetables, including broccoli, cauliflower, Brussels sprouts, and cabbage. I3C and its derivative compounds have been shown to exert immunomodulatory effects in the human body. I3C has been shown to exhibit direct antiestrogenic activity via competitive inhibition of estrogen receptors, upregulate the cytochrome P450