The Shield Immunity Patch from The Friendly Patch is the perfect way to support your immune system and keep yourself healthy. This patch contains a powerful blend of natural ingredients, including Zinc Picolinate, Vitamin C (Ascorbic Acid), Vitamin D3, Pterostilbene, and Oregano Oil, together to provide several benefits.Zinc Picolinate is an essential mineral that supports immune function. At the same time, Vitamin C (Ascorbic Acid) is a powerful antioxidant that helps to protect the body from damage caused by free radicals. Vitamin D3 is essential for bone health and immune function, while Pterostilbene is a natural compound that supports healthy aging and immune function.