https://www.coca-cola.com/us/en/brands/coca-cola/products/ze...

>CARBONATED WATER, CARAMEL COLOR, PHOSPHORIC ACID, ASPARTAME, POTASSIUM BENZOATE (TO PROTECT TASTE), NATURAL FLAVORS, POTASSIUM CITRATE, ACESULFAME POTASSIUM, CAFFEINE, STEVIA EXTRACT.

Not sure how stevia got on there. The zero caffeine version (also on that list) doesn't have it. Nor does Amazon's listing

https://www.amazon.com/Coca-Cola-Zero-Sugar-Fridgepack-Pack/...