Zinc is a mineral cofactor in hundreds of enzymatic reactions involved in protein and carbohydrate metabolism, RNA/DNA synthesis, and intercellular signaling. Zinc is essential for the normal functioning of many body organs and systems; supporting healthy immune, skeletal, neurological, and endocrine functions. Dietary bioavailability of zinc is relatively low, which is why Protocol For Life Zinc Glycinate (also known as Bisglycinate) is chelated to enhance absorption and bioavailability. Protocol For Life offers only Zinc Glycinate in a capsule with pumpkin seed oil as a healthy synergist.