Crystalline fructose is not considered an artificial sweetener. It is a natural sugar that occurs in fruits, vegetables, and honey. It is derived from corn syrup through a process that isolates and purifies the fructose. Crystalline fructose is often used as a sweetener in food and beverages due to its high sweetness level. However, it is important to note that excessive consumption of any sweetener, including crystalline fructose, should be moderated as part of a balanced diet.