Does Coke Zero have aspartame?

What’s in Coke Zero?

A typical ingredient list for Coca‑Cola Zero Sugar includes:

• Carbonated water

• Caramel color

• Phosphoric acid

• Aspartame

• Potassium benzoate (preservative)

• Natural flavors

• Potassium citrate

• Acesulfame potassium (Ace‑K)

• Caffeine (in most variants)

Aspartame is a low‑calorie artificial sweetener about 200 times sweeter than sugar, so only small amounts are needed.

Is the aspartame in Coke Zero safe?

Major regulators (e.g., FDA, EFSA, FSSAI) consider aspartame safe for the general population within established limits. The acceptable daily intake (ADI) is commonly cited as:eathealthy365

• 40–50 mg/kg body weight/day (varies by region)

For a 70 kg adult, this translates to roughly 2,800–3,500 mg of aspartame per day—far more than the ~85 mg found in a single can of Coke Zero.

People with phenylketonuria (PKU) must avoid aspartame because it contains phenylalanine; such products carry a warning label.unclekiwi

Coke Zero and diabetes

• Coke Zero does not contain sugar and typically does not cause an immediate spike in blood glucose.

• Studies suggest non‑nutritive sweeteners like aspartame do not significantly raise blood glucose or insulin in the short term when consumed within moderate limits.unclekiwi

• However, daily heavy intake of diet sodas may be linked to changes in gut health, cravings, or metabolic markers over time, so many clinicians recommend limiting to occasional use rather than making it a primary beverage.

Bottom line

Coke Zero does contain aspartame (plus acesulfame potassium). For most adults, including many with diabetes, occasional consumption is considered safe and unlikely to affect blood sugar directly, but it should not replace water or other healthier drinks as a daily habit.