Sugar-free Gum with 13 Different Essential Vitamins Oi Multivitamin provides you a balanced blend of 13 essential nutrients (Vitamin D, B Vitamins & antioxidants) along with fresh breath. Chew it anytime while you play, study or work for extra nutrition. Chewing gum proves to be a great vehicle for any type of nutritional ingredients because it allows faster absorption into your blood stream through the mouth's mucous lining as well as your small intestines. Ingredients in Oi Multivitamin Gum: Vitamin A- This is a very important nutrient which helps to increase the immunity of the body so it can fight various infections & keeps the eyes moist & soft. It also lowers cholesterol & provides stronger teeth & bones.