Basic Nutrition Immune Support Zinc 10 mg Tablets is a dietary supplement that contains zinc, a mineral that plays a crucial role in supporting the immune system and overall health. Here's some general information about this type of supplement. The primary ingredient in "Basic Nutrition Immune Support Zinc 10 mg Tablets 60's" is zinc. Zinc is an essential mineral, which means it must be obtained through the diet or supplements because the body cannot produce it on its own. It is typically present in the form of zinc gluconate, zinc citrate, or another zinc compound.