Mushrooms, Camu-Camu, Cocoa & Flax Vegan Soy Free Gluten Free Non-GMO USDA Organic Certified Organic by QAI Immune Support Reduce Toxins Brain Health Dietary Supplement Immune Support Booster Mushrooms contain the "master antioxidants" ergothioneine, which gives the immune system a major boost by helping to eliminate free radicals. Mushrooms also provide natural antibiotics polysaccharides and vitamin C to strengthen the immune system. Immune Booster also contains polyphenol-rich cocoa for added antioxidant protection.