I am 65,and include daily supplements in my diet,including supermarket brand Zinc tablets,I have arthritis and recently a calcium build up on my right heel, which is very painful to walk with, causing a noticeable limp. I am currently half way through my first bottle of Zinc Acetate which is the only variant to my normal daily routine, and I am so happy I can now walk normally with greatly reduced pain and can now do heel stretches on the stairs.