This formula contains 2 forms for Zinc from Albion Labs, the leader in Bio Identical Mineral Chelation a. Zinc Bisglycinate: The best absorbed and best retained type of zinc there is. b. Zinc Arginate: This form of zinc has been documented to absorb better into the prostate than other forms of zinc. And for women the arginine can help balance the hormonal system as well as having many other positive effects.