Thayer Henry Company Sugar-Free Citrus Dry Mouth Spray, 4 Ounce — 6 per case. Ingredients: Purified Water (gently moisturizes the mucous membranes in the mouth) Vegetable Glycerin (a soothing demulcent that also provides instant moisture) Calcium Gluconate (promotes healthy bone structure) Tris Amino (buffers saliva to normal levels naturally) Citric Acid (derived from citrus fruit for tartness) Potassium Chloride (matches the salt in human saliva) Natural Citrus Flavor (derived from oils of lemon and lime) Shelf Life: 999 days