Taco Bell Diet Pepsi: nutrition and allergens
Taco Bell lists the Diet Pepsi in 3 sizes, all at 0 calories. Taco Bell gives the same values for every size, so they describe one serving, not the whole order. The 16 fl oz has 0 g fat, 0 g carbohydrate, 0 g protein and 75 mg sodium.
Taco Bell describes it as “A crisp tasting, refreshing pop of sweet, fizzy bubbles without sugar, calories or carbs.”
Nutrition facts
| Per serving | 16 fl oz | 20 fl oz | 30 fl oz |
|---|---|---|---|
| Calories | 0 | 0 | 0 |
| Total fat (g) | 0 0% | 0 0% | 0 0% |
| Saturated fat (g) | 0 0% | 0 0% | 0 0% |
| Trans fat (g) | 0 | 0 | 0 |
| Cholesterol (mg) | 0 0% | 0 0% | 0 0% |
| Sodium (mg) | 75 3% | 95 4% | 140 6% |
| Total carbohydrate (g) | 0 0% | 0 0% | 0 0% |
| Dietary fiber (g) | 0 0% | 0 0% | 0 0% |
| Total sugars (g) | 0 | 0 | 0 |
| Added sugars (g) | 0 0% | 0 0% | 0 0% |
| Protein (g) | 0 0% | 0 0% | 0 0% |
Percentages are the share of the FDA Daily Value for adults and children 4 and over, worked out from Taco Bell’s published amounts (how % Daily Value works). A dash means Taco Bell does not publish that value for this size.
Using the FDA’s rule of thumb that 5% of the Daily Value or less per serving is low and 20% or more is high, the 16 fl oz size is low in sodium, fat, saturated fat, cholesterol, carbohydrate, dietary fiber, added sugars and protein. Add it up with other items in the Taco Bell nutrition calculator.
Values do not account for ice.
Allergens
Taco Bell’s allergen information lists none of the allergens it reports for the Diet Pepsi.
| Milk | Not listed |
|---|---|
| Egg | Not listed |
| Fish | Not listed |
| Crustacean shellfish | Not listed |
| Tree nuts | Not listed |
| Peanuts | Not listed |
| Wheat | Not listed |
| Soy | Not listed |
| Sesame | Not listed |
| Gluten | Not listed |
Taco Bell says its kitchens handle egg, milk, soy, wheat and other allergens on shared equipment and in shared areas, so it cannot rule out cross-contact. Its allergen information reflects standard recipes as of the last update. Peanuts, tree nuts, fish and shellfish are not used in regular menu items, but those items may be made in facilities that also handle them, and test or limited-time items may contain them. Soybean oil is not flagged as a soy allergen. Taco Bell makes no gluten-free claims: some items are made without gluten ingredients but are prepared in shared kitchen areas and shared fryer oil, and it does not recommend its food for people with celiac disease. Its AVA-certified vegetarian items are lacto-ovo vegetarian, but they may share frying oil and handling with meat.
Ingredients
Carbonated water, caramel color, phosphoric acid, sodium citrate, sucralose, potassium benzoate (P), acesulfame potassium, caffeine, natural flavor, citric acid, calcium disodium EDTA (P).
Other items in Fountain Beverages at Taco Bell
By calories (16 fl oz), the Diet Pepsi ranks 2 of 18 in Taco Bell’s Fountain Beverages section, from lowest to highest. The table shows the 9 items nearest to it; each item is compared at its first listed size.
| Item | Calories |
|---|---|
| Diet Dr Pepper16 fl oz | 0 |
| Diet Pepsi16 fl oz | 0 |
| Lipton Unsweetened Iced Tea16 fl oz | 0 |
| Mtn Dew Zero Sugar16 fl oz | 0 |
| Pepsi Zero Sugar16 fl oz | 0 |
| Mtn Dew Baja Blast Zero Sugar16 fl oz | 5 |
| G2 - Fruit Punch16 fl oz | 45 |
| Brisk Dragon Paradise Sparkling Iced Tea16 fl oz | 60 |
| Tropicana Original Lemonade16 oz | 70 |
Nutrition for all 18 items in Fountain Beverages at Taco Bell
Browse the Taco Bell menu by goal: high-protein items · low-calorie items · vegetarian items
Sources
- 1 Taco Bell, Taco Bell Full Nutrition Information (served by Nutritionix, linked from tacobell.com) Covers nutrition, menu and diet · Last Updated 10/07/2026 · Checked 8 Oct 2026
- 2 Taco Bell, Taco Bell Food Allergy & Sensitivity Information (served by Nutritionix, linked from tacobell.com) Covers allergens · Last Updated 10/07/2026 · Checked 8 Oct 2026
- 3 Taco Bell, Taco Bell item nutrition labels with allergens and ingredients (served by Nutritionix, linked from tacobell.com product pages) Covers allergens and ingredients · Checked 8 Oct 2026
- 4 Taco Bell, Taco Bell online menu and product pages Covers diet and menu · Checked 8 Oct 2026
- 5 Taco Bell, Taco Bell Full Nutrition Info page Covers menu · Internet Archive copy, September 2026 · Checked 8 Oct 2026
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