Stick with HALLS. Whether you?re at home, school, the office, or out and about, convenient sticks of HALLS Defense Vitamin C Drops go everywhere you go. Immune system support is just a purse, pocket, or medicine cabinet away with these slim, portable, grab-and-go packs. Made to Defend. Maintain your wellness anytime, anywhere with HALLS Defense Vitamin C Drops. Formulated with 225% daily value of antioxidant vitamin C, these dietary supplements offer immune support in 3 tasty, citrus-y flavors: Lemon, Sweet Grapefruit, and Orange. Add this bulk package of HALLS Defense Assorted Citrus Flavor Vitamin C Drops to your cart for fast and convenient immune support.