Squirt is a grapefruit-flavored carbonated soda made with carbonated water, high fructose corn syrup, and a small amount of real grapefruit juice concentrate (2% or less). It’s caffeine-free, which sets it apart from most mainstream sodas, and it gets its tart citrus flavor from a combination of that grapefruit juice and citric acid.
Full Ingredient List
A standard 12-ounce can of Squirt contains carbonated water, high fructose corn syrup, grapefruit juice concentrate (less than 2%), natural flavors, citric acid, modified corn starch, ester gum, sodium benzoate, and calcium disodium EDTA. The carbonated water and corn syrup make up the bulk of the drink, while everything else appears in trace amounts to fine-tune the flavor, texture, and shelf life.
The grapefruit juice concentrate is real juice, but at less than 2% of the total formula, it contributes more to the flavor profile than to any nutritional benefit. Most of Squirt’s characteristic tartness comes from citric acid, the same compound found naturally in citrus fruits.
Nutrition per Serving
A 12-ounce can of Squirt has roughly 140 calories and about 38 grams of sugar, all from high fructose corn syrup. If you’re drinking from a 20-ounce bottle, that jumps to 240 calories and 63 grams of sugar. Sodium sits at about 80 milligrams for the larger bottle. There’s no protein, fat, or fiber to speak of.
Caffeine Content
Original Squirt contains zero milligrams of caffeine, making it one of the few popular sodas that’s completely caffeine-free. This applies to both regular and diet versions of the classic grapefruit flavor.
The exception is Ruby Red Squirt. Both the regular and diet Ruby Red versions contain 39 milligrams of caffeine per 12-ounce can, which is roughly comparable to a can of Coca-Cola. If you’re avoiding caffeine, stick with the original grapefruit variety and check the label on any Ruby Red products.
What the Additives Do
Several of Squirt’s ingredients exist purely to keep the drink stable and consistent in the can or bottle. Modified corn starch and ester gum are emulsifiers. They prevent the grapefruit flavoring from separating and floating to the top, which would otherwise happen because oil-based flavor compounds don’t mix easily with water. Some formulations also include acacia gum, which serves the same purpose.
Sodium benzoate is the primary preservative, preventing mold and bacteria growth so the soda stays safe on store shelves. Calcium disodium EDTA plays a supporting role. It binds to trace metals that naturally occur in the water and other ingredients, preventing those metals from triggering flavor changes or discoloration over time. You’ll see both of these preservatives across a wide range of soft drinks and packaged foods.
Squirt Zero Sugar
The zero-sugar version swaps out high fructose corn syrup for two artificial sweeteners: aspartame and acesulfame potassium. These work together because aspartame provides the initial sweetness while acesulfame potassium rounds out the aftertaste, making the overall flavor closer to the sugared version. The rest of the ingredient list is similar, with carbonated water, natural flavors, concentrated grapefruit juice, citric acid, and the same stabilizers and preservatives.
One notable difference: the zero-sugar formula includes brominated vegetable oil, a stabilizer that helps distribute citrus flavoring evenly throughout the drink. This ingredient has drawn regulatory scrutiny in recent years and has been banned in some countries, though it remains permitted in the U.S. in small amounts. Not all Squirt formulations contain it, so check the label if it’s something you prefer to avoid.
How Squirt Compares to Other Citrus Sodas
Squirt occupies a slightly different niche than lemon-lime sodas like Sprite or 7Up. Its grapefruit base gives it a more bitter, tart edge, and the inclusion of actual grapefruit juice concentrate (however small the amount) distinguishes it from sodas that rely entirely on artificial or natural flavoring without any juice at all. The caffeine-free formula also makes it unusual. Most citrus sodas like Mountain Dew or Sun Drop pack significant caffeine, while Squirt, Sprite, and 7Up do not.
Calorie and sugar counts are comparable across most regular citrus sodas. A 12-ounce Squirt and a 12-ounce Sprite both land in the 140-calorie range with roughly 38 grams of sugar. The real difference is in the flavor itself: grapefruit versus lemon-lime, with Squirt delivering a distinctly sharper, more grown-up citrus taste.