Necta Sweet Saccharin Sugar Substitute Tablets have rapidly become America's Best Selling Saccharin Tablets for a variety of reasons. For instance, unlike other brands, Necta Sweet Tablets are truly calorie free and low carbohydrate in content. There is no lactose or dextrose in our specially-designed formulation. Necta Sweet Saccharin Tablets. 1/2 grain 1000 count bottle contains as much sweetness as ten boxes of 100 count packets. Beverages sweetened by Necta Sweet are not cloudy in appearance and there is no film or residue visible at the surface. The tablets dissolve quickly even in iced drinks.