In cruciferous vegetables such as broccoli, cauliflower, cabbage, and brussels sprouts, a series of compounds react when the vegetable cell walls are broken through chopping, chewing, or juicing . DIM is just one of many Dietary Indoles produced in this way*. DIM is proven to have significant physiological activity 
Diindolylmethane (DIM) supports the body’s ability to eliminate toxins from the liver , optimizes the body’s natural metabolism of hormones, and promotes good estrogen (2-Hydroxyestrone) . This dietary indole antioxidant is an important factor in promoting women’s health.
Adults 100 to 200 mg per day. Children may take up to 1/2 adult dosage.
DIM is stable at room temperature but must be protected from light. The highly-colored degradation products are considered beneficial and are the same as those formed in the stomach upon ingestion.
Diindolylmethane; 3,3(-Diindolylmethane; Bisindolylmethane; B3IM; BIM
Dietary Indole CAS Registry Number [1968-05-04]
DIM is a Dietary supplement under provisions of US Dietary Supplement Health and Education Act of 1994 (DSHEA).
Amounts in excess of recommended dosages may cause diarrhea.
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* While these compounds occur naturally, they exist in extremely low quantities. All commercial sources are synthetic.