Zarbee's Cough + Immune Cold and Relief 11 g Strength Syrup 237 ml - EachCold and Cough Relief Zarbee's Cough + Immune 11 g Strength Syrup 8 oz. The primary components of Zarbee's Naturals Complete Cough Syrup + Immune are dark honey, elderberry extract and zinc Honey is a natural antioxidant containing vitamins and minerals that may support overall health and well being Elderberries pack a sweet and juicy punch and have been used for centuries to promote wellness; the extract from the tiny berries acts as an antioxidant