Nutrition Guide: What Soda Has No Phosphorus and Why It Matters

October 10, 2025 •

3 min read

Studies show that phosphorus additives in dark colas are absorbed by the body almost completely, a much higher rate than the phosphorus found naturally in foods. This guide explores which sodas are free of these additives, answering the crucial question: what soda has no phosphorus?

Quick Summary

This guide identifies sodas free of phosphoric acid, explaining why phosphorus content matters for a healthy diet, particularly for kidney health. It provides a list of low-phosphate soda options and other beverage alternatives.

Key Points

Clear sodas are typically phosphorus-free: Many lemon-lime sodas like Sprite and 7UP, as well as ginger ale and some root beers, do not contain phosphoric acid.
Dark colas contain phosphoric acid: Colas like Coke and Pepsi use phosphoric acid as an additive, which the body absorbs very efficiently, making them unsuitable for low-phosphate diets.
Check for 'phos' on labels: To identify added phosphorus, look for ingredients containing the term 'phos,' such as phosphoric acid, sodium phosphate, or calcium phosphate.
Added vs. natural phosphorus: The body absorbs added, inorganic phosphorus from sodas much more readily than the natural, organic phosphorus found in whole foods.
Consider other alternatives: For a low-phosphorus diet, excellent beverage alternatives include plain water, sparkling water, brewed unsweetened teas, and certain fruit juices.
Kidney health is a major concern: High phosphorus intake is especially dangerous for those with chronic kidney disease (CKD), as it can lead to complications like weak bones.

The Role of Phosphorus and Phosphate Additives

Phosphorus is an essential mineral important for strong bones and teeth. However, managing phosphorus intake is vital for individuals with conditions like chronic kidney disease (CKD). In impaired kidney function, excess phosphorus can accumulate in the blood, potentially leading to weakened bones, joint pain, and heart issues. Healthy kidneys efficiently filter excess phosphorus, but this function is compromised in those with CKD.

There's a significant difference in how the body absorbs natural phosphorus versus phosphate additives. Natural phosphorus in whole foods is less absorbed than the inorganic phosphorus added to processed items like dark sodas, often as phosphoric acid. Phosphoric acid is used in many dark sodas for flavor, preservation, and color stability. The body absorbs almost all added phosphorus, making dark sodas a considerable source to limit, especially on a renal diet.

Sodas Free of Phosphoric Acid

For those seeking carbonated drinks without added phosphorus, several choices exist. Lighter-colored sodas often use citric acid rather than phosphoric acid. However, checking ingredient labels is crucial as formulations vary.

Common phosphorus-free soda options

Lemon-lime sodas: Brands like Sprite and 7UP generally lack phosphoric acid. Diet versions are also typically free of this additive, though checking labels for other additives is recommended.
Ginger ale: Most ginger ale brands, such as Canada Dry, do not contain phosphoric acid. Be sure to check labels for sodium content.
Root beer: Many root beer brands, including A&W, are made without phosphoric acid. However, some, like Barq's, may contain it, so always read the ingredients.
Orange soda: Certain orange sodas, like some Fanta varieties, are made with citric acid and don't have added phosphorus.
Zevia: This brand offers various soda alternatives sweetened with stevia, free from phosphate additives, sugar, sodium, or potassium.
Green Cola: A cola alternative specifically labeled as containing 0% phosphoric acid.

Comparison of Phosphorus in Sodas

Here's a comparison table highlighting phosphorus-related ingredients in different soda types:


Feature	Dark Colas (e.g., Coke, Pepsi)	Clear Sodas (e.g., Sprite, 7UP)	Specialty Sodas (e.g., Zevia)
Phosphorus Additive	Contains phosphoric acid.	Generally free of phosphoric acid.	Free of phosphate additives.
Primary Acidulant	Phosphoric Acid.	Citric Acid.	Citric Acid or other natural flavorings.
Sugar Content	High in regular versions.	High in regular versions.	Zero sugar, sweetened with stevia.
Artificial Sweeteners	Yes, in diet versions.	Yes, in diet versions.	Stevia, a natural sweetener.

Why Reading Labels is Crucial

Ingredient formulations can change, and different brands may use different additives. To confirm a soda's phosphorus content, look for ingredients containing "phos," such as calcium phosphate, sodium phosphate, or phosphoric acid. These inorganic forms are highly absorbable and should be limited on a low-phosphate diet. Some diet sodas may also contain potassium additives, which can be a concern for those with kidney issues. Always check the nutrition label and ingredient list carefully.

Other Low-Phosphorus Beverage Alternatives

Several kidney-friendly beverage options offer variety without added phosphorus or high sugar.

Here are some excellent alternatives:

Flavored sparkling water: Brands like La Croix and Bubly offer naturally flavored sparkling water without phosphorus or potassium additives.
Brewed iced tea or coffee: Unsweetened, home-brewed tea and coffee are naturally low in phosphorus. However, bottled versions may contain added phosphates, so check labels.
Infused water: Adding fruits like berries or cucumber to water provides natural flavor.
Low-potassium juices: Apple, cranberry, and grape juice are suitable in moderation for those managing potassium levels.
Unenriched rice or almond milk: These are lower in phosphorus compared to cow's milk or soy milk.

The Bottom Line on Nutrition and Phosphorus

Moderate consumption of sodas with phosphoric acid is generally not a concern for healthy individuals. However, for those with chronic kidney disease or other conditions requiring limited phosphorus, beverage choices are critical. Opting for clear, non-cola sodas or naturally low-phosphorus drinks like water, tea, and infused water can help manage phosphorus levels. Reading ingredient labels and making informed choices is key to managing nutritional intake while enjoying various beverages.

For more information on managing CKD and phosphorus intake, resources from organizations like the National Kidney Foundation are available.

Frequently Asked Questions

Clear sodas like Sprite, 7UP, and Canada Dry ginger ale are typically made without phosphoric acid. Some root beer brands, such as A&W, and specialty brands like Zevia and Green Cola also contain no added phosphorus.

Not all diet sodas are free of phosphorus. While diet versions of clear sodas (like Diet Sprite) are often low in phosphorus, dark diet colas (like Diet Coke and Diet Pepsi) still contain phosphoric acid and should be avoided on a low-phosphate diet.

Phosphoric acid is an inorganic, lab-produced form of phosphorus added to foods and drinks. Natural phosphorus, found in whole foods like meats and vegetables, is an organic form. The body absorbs inorganic phosphate additives almost completely, while it absorbs a smaller percentage of natural, organic phosphorus.

Phosphoric acid is added to sodas to enhance flavor, add tartness, and serve as a preservative. It helps prevent the growth of mold and bacteria and slows the oxidation process, prolonging the shelf life of the beverage.

No, it is not a guarantee. While many clear sodas are free of phosphoric acid, ingredient formulations can differ by brand and region. It is always best to check the ingredient list on the product label for additives like 'phosphoric acid' or 'sodium phosphate'.

Excess phosphorus can accumulate in the blood, a condition called hyperphosphatemia. Over time, this can cause calcium to be pulled from the bones, leading to weakened bones and potentially depositing calcium in other parts of the body, causing damage to organs like the heart.

Good alternatives include plain water, flavored sparkling water (like La Croix), brewed unsweetened teas (green or black), some fruit juices (apple, cranberry, grape), and fruit-infused water.