Vitamins
Gizzards are a good source of vitamins, with each serving providing 1.5 micrograms of vitamin B-12 or 25% of the DV, 4.5 milligrams of niacin or 23% of the DV, & 0.3 milligram of riboflavin or 18% of the DV. Vitamin B-12 is essential for brain function and forming red blood cells and DNA. Niacin improves circulation, producing hormones and supporting proper nervous system function, and riboflavin is important for antioxidant function, producing energy & keeping your paw's skin & coat healthy.
Minerals
Eating gizzards will also increase mineral consumption, as each serving provides 6.4 milligrams of zinc or 43% of the DV, 4.6 milligrams of iron or 26% of the DV & 274 milligrams of phosphorus or 27% of the DV. Zinc helps form DNA & proteins & is involved with wound healing & immune function. Iron is needed for forming red blood cells & producing energy, & phosphorus is essential for muscle, nerve & heart function.