Avmacol Extra Strength is a patented, sulforaphane-producing supplement that works in combination with Maitake mushroom extract (Grifola frondosa) to support your body's natural detoxification process better than sulforaphane alone1. Avmacol Extra Strength provides glucoraphanin (sulforaphane glucosinolate) and active myrosinase enzyme which are the essential ingredients needed for sulforaphane production. Maitake mushroom extract has been found to provide immune support by promoting neutrophil function and natural killer cell activity.* Sulforaphane promotes your body's natural detoxification process for certain environmental threats found in the air you breathe, the food you eat, and the water you drink. Research has shown sulforaphane also supports the body's defenses against oxidative stress and cell damage.*