Diet Coke (Medium)

1 medium (30 fl oz) · 0 cal · 0g protein
13 Poor
Seed oil free Scored as the packaged product

How we scored it

The product contains multiple artificial sweeteners and preservatives, including aspartame and sodium saccharin, which are considered harmful. Additionally, the presence of caramel coloring and phosphoric acid contributes to a high level of processing, resulting in a low health score.

Nutrition facts

Per 1 medium (30 fl oz)Amount% DV
Calories 0
Total fat 0g 0%
Saturated fat 0g 0%
Trans fat 0g
Cholesterol 0mg 0%
Sodium 25mg 1%
Total carbohydrate 0g 0%
Dietary fiber 0g 0%
Sugars 0g
Protein 0g 0%

Casey's's published nutrition. Percentages are of the daily value on a 2,000-calorie diet.

Key ingredients

8
CARAMEL
Bad

Caramel coloring is used for the drink's color but may contain chemicals that some consumers prefer to avoid due to potential health concerns.

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PHOSPHORIC ACID
Bad

Phosphoric acid is added for acidity and flavor, but excessive intake has been linked to potential dental erosion and mineral imbalance.

See more about PHOSPHORIC ACID →
SODIUM SACCHARIN
Bad

Sodium saccharin is an artificial sweetener used to provide sweetness without calories, but some consumers prefer to limit artificial sweeteners in their diet.

See more about SODIUM SACCHARIN →
POTASSIUM BENZOATE
Bad

Potassium benzoate is a preservative that helps prevent bacterial growth, but it may form trace amounts of potentially harmful compounds under certain conditions.

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CAFFEINE
Bad

Caffeine provides a stimulating effect, but excessive consumption can lead to sleep disturbances and increased heart rate.

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ASPARTAME
Bad

Aspartame is an artificial sweetener that provides sweetness without calories, but some consumers prefer to avoid it due to health concerns.

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CARBONATED WATER
Neutral

Carbonated water is simply water infused with carbon dioxide gas, providing the fizzy sensation without added calories or sugars.

See more about CARBONATED WATER →
NATURAL FLAVORS
Neutral

Natural flavors are added to enhance taste and aroma, but their exact composition is often proprietary and can vary.

See more about NATURAL FLAVORS →

Scout's score is an independent read of Casey's's published ingredient statement and nutrition for this item, last scored September 2026. Recipes change — check the chain for today's menu. Scout takes no payment from any chain. How we score · Full Casey's menu.