Two Ingredients - Immune Booster features two clinically studied and supported ingredients (DE111 and PreforPro) to provide an easy way to help maintain your health. Daily immune & digestive health - A scientifically advanced product for daily use to support immune and digestive health; Featuring a clinically supported probiotic strain and a patented prebiotic that work to promote good bacteria. Convenient, single-serve packets - One packet per day helps maintain a healthy immune system, normal digestion and regularity anytime and anywhere—work, school, travel. No major allergens - Get immune system support any time, anywhere, every day with a formula that's Vegan, Non-GMO, and Gluten free; No wheat, gluten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts or sesame. Superior Science, Smarter Formulas - Informed by strong scientific research, Jarrow Formulas products are carefully crafted to ensure you get the benefit of each and every vitamin, mineral and supplement.