FORTIFY YOUR IMMUNE SYSTEM. The TRAVELAID Immunity Blend delivers key vitamins and nutrients to help you boost your immune system when you need it most. Vitamins A, C and D, as well as Zinc, Echinacea, Astragalus and Valerian Root promote wellness and immune support. Chamomile and Lemon Balm help relax nerves while Ginger Root helps reduce stomach nausea. AID your wanderlust.