DIM / I3C
Authority reference amounts for DIM / I3C and the label daily doses of 88 public products.
Key numbers
Key facts
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=diindolylmethane&lang=eng · Health Canada NNHPD monograph: not to exceed 200 mg DIM/day
Dose ruler: where does your dose sit?
Drag to your dose to see where it sits among 88 products and how far it is from the authority limits.
Log scale; green bars show the label daily amounts of the products we track. It is a market reference, not dosing advice.
Daily dose across products (mg/day)
Label data from official national databases and brand websites, as declared; not lab-verified.
Common questions
Is there an official upper limit for DIM / I3C?
No UL has been set. We use a cited reference upper value of 200 mg per day. It comes from the linked study or assessment and is not a regulatory limit. [source]
How much DIM / I3C do products usually contain per day?
As of 2026-11-01, 88 products list a comparable daily dose (96 dose records; one product can have several). The median is 100 mg per day, and 90% of records fall between 8 and 250 mg. Figures come from labels and are not lab-tested. [source]
Dosage forms
Among 4 public products whose only comparable dosed ingredient is DIM / I3C, the dosage forms are as follows. By registry market: US 3, United States 1.
Common brands
Ordered by the number of public products with a comparable DIM / I3C dose.
This page is for general information and market data only. It is not a diagnosis or treatment advice. If you are pregnant, breastfeeding, ill or taking medicines, talk to a doctor or pharmacist first.