NECTASWEET SUGAR SUB TB .25 GR Size: 500 Necta Sweet Saccharin Sugar Substitute Tablets dissolves quickly and does not leave a residue. Necta Sweet Tablets are truly calorie free and low carbohydrate in content. There is no lactose or dextrose in our specially-designed formulation. Beverages sweetened by Necta Sweet are not cloudy in appearance and there is no film or residue visible at the surface. Tamper evident serve-through color coded bottle caps.