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4-In-1 FormulaDietary SupplementPotent Antioxidant Combo Reinforces Your Body's DefensesScience-Backed Quality Since 1969Vitamin C with zinc echinacea and elderberry for immune health support.Rev up your immune health with Swanson Zinc & C Lozenges! This vitamin mineral and herb blend is a 4-in-1 formula featuring time-honored vitamin C zinc elderberry and echinacea all working together to support healthy immune system function.As an increasingly popular immune support supplement we’ve included zinc to encourage natural killer (NK) cell production and reinforce your immune system. This essential mineral also promotes antioxidant activity to combat free radicals and promote cell and tissue integrity. Combined with antioxidant-rich vitamin C these ingredients provide a powerhouse of immune health benefits.We’ve added traditional herbal remedy echinacea relied upon for its immune-supportive properties for centuries as well as a customer favorite—elderberry—for antioxidant protection and some added support for your body’s defense system. Our elderberry is an extract standardized to 15% polyphenols and 5% flavonoids.Not only are these lozenges loaded with immune helpers they’re also delicious with their citrus flavor and only need to be taken once a day. Keep immune health locked loaded and ready for action with Swanson Zinc & C Lozenges.