One of the first ever diet beverages from 1963, which is sweetened with saccharin, was discontinued and/or supply severely reduced shortly after the introduction of aspartame (NutraSweet®) flavored Diet Coke®.
Production and populatity of the Totally Artificial Beverage (T-A-B) seems to have been resurging lately (early 2000's) because of the negative press/rumors given to aspartame usage by low-carb (Atkins®) dieters.
"Can I have a Tab? Well then give me a Pepsi Free. Alright, just give me a cup of coffee." Marty McFly - Back to the Future