Now with 200mg of DIM and 200mg of Calcium D-Glucarate Per Dose! Diindolylmethane (DIM) is a compound derived from the digestion of indole-3-carbinol found in cruciferous vegetables such as broccoli, brussels sprouts, cabbage and kale. Dr. Leonard Bjeldanes PhD. of UC-Berkley was the first to discover DIM's biological mechanism of action through its role in healthy estrogen metabolism and unique immune modulatory properties.