Product Name: Superoxide Dismutase Powder Other name: SOD Product appearance: Off white powder Product packaging: aluminum foil bag Storage: Store in a cool and dry place, away from light and heat. Shelf life: 2 years Function: 1. Superoxide dismutase can eliminate excessive superoxide anion free radicals produced by metabolism, playing a role in delaying aging of the body. 2. Superoxide dismutase can also significantly improve and enhance the immune function of the human body against factors such as smoke, radiation, and toxic chemicals that induce superoxide anion free radicals. Enhance the body's ability to adapt to the environment. 3. Superoxide dismutase can help our body eliminate fatigue and enhance its ability to adapt to physical exertion