Is aspartame keto?

What it is

Aspartame is used in such small amounts that it adds no meaningful carbs. Labels must warn that it contains phenylalanine, which matters for people with phenylketonuria (PKU).

Tabletop packets are bulked with dextrose or maltodextrin, like other sweetener packets. It breaks down with heat, so it is not used for baking.

How to count it

Adds no meaningful carbs on its own.

No carbs themselves, though packets are often bulked with dextrose.

Where you will find it

• Diet sodas
• Sugar-free gum and yogurt
• Blue sweetener packets