Supplement your dog’s diet with Nutramax Avmaquin Sulforaphane Producing Supplement for Dogs. Sulforaphane is a phytochemical obtained from the consumption of cruciferous vegetables, most notably broccoli. Avmaquin provides reliable and consistent levels of the necessary ingredients required for sulforaphane production and is shown to be bioavailable in dogs. Avmaquin Sulforaphane Producing Supplement is brought to you by Nutramax Laboratories Veterinary Sciences, a veterinarian-recommended supplement company.