A method of making antacid coated chewing gum products comprises the steps of providing chewing gum cores; providing a coating syrup comprising a bulk sweetener, calcium carbonate and a binding agent; and applying the coating syrup to the cores and drying the syrup to produce a sugarless coating on the cores. The coating on the cores produces a high viscosity in saliva when the gum is chewed, in that 4.5 grams of said coating dispersed in 30 ml of water has a Brookfield viscosity at 23.degree. C. of at least 1.6 centipoise.