Avmacol is the 1 Researched Sulforaphane Producing Brand. Avmacol Extra Strength is our patented formulation providing glucoraphanin (sulforaphane glucosinolate) and Myrosimax (active myrosinase enzyme), the essential ingredients needed for sulforaphane production, and beta-glucans form Maitake mushroom (Grifola frondosa) extract. Sulforaphane help..