However, it can be quite difficult to calculate just how much you're really ingesting, especially if you consume several types of aspartame-containing foods and beverages. Dosing can vary wildly from product to product. For example, the amount of aspartame will vary from brand to brand, and from flavour to flavour. Some can contain close to twice the amount of aspartame as others, and some contain a combination of aspartame and other artificial sweeteners.