How to Find the Best Low Phosphorus Protein Powder​

📌 Overview and Key Takeaways

This is a Certified Nutrition Coach’s guide on how to find the best low phosphorus protein powder​​.

Discover how to safely meet your protein needs on a low phosphorus diet.

Last Updated
Apr 1, 2026

Author and Medical Reviewer

Written by Jack, CNC

Jack is a National Academy of Sports Medicine Certified Nutrition Coach.

Medically reviewed by Brittany, MS, RD and Jenn, PA-C

Brittany is a Registered Dietitian with a MS in Nutrition.

Jenn is a Physician Assistant with a BA in Nutritional Sciences.

Low Phosphorus Protein Powder​

Why Should I Choose a Low Phosphorus Protein Powder? 

Which Protein Powders Are Low Phosphorus?

In general, dairy and soy-based proteins tend to have the highest phosphorus levels, whereas egg white and collagen-based proteins tend to have the lowest.

Egg White Protein Powder and Collagen Protein Powder are therefore the best protein sources for people with CKD, especially those undergoing dialysis treatment.

Egg whites can also lower phosphorus levels in the blood (J Ren Care, 2011).

Egg whites do contain a moderate amount of sodium, however, so if this is a concern for you, then collagen protein powder might be the better option.

Keep in mind that added ingredients can contribute phosphorus.

Phosphate-based additives, in particular, can significantly increase phosphorus content.

Common examples include:

• Calcium phosphate
• Sodium phosphate
• Potassium phosphate
• Dipotassium phosphate

Also keep an eye out for added vitamins and minerals, as they too can contain phosphorus.

It follows that depending on your recommended phosphorus intake, you might want to choose a single-ingredient egg white or collagen protein powder.

Consult with a trusted healthcare professional to determine how much phosphorus is safe for you to consume.

What Is the Best Low Phosphorus Protein Powder​?

Not all low phosphorus protein powders are created equal.

As long as you are eating a balanced diet – getting protein from a variety of sources – there is no advantage to using one type of protein over another.

Ingredients do matter, however, especially if you have pre-existing gut issues.

Food additives and protein concentrates and isolates, for example, might indirectly contribute to CKD via disruptions to your gut microbiome – the collection of microorganisms living in your digestive tract.

🚫 Avoid Food Additives

Regularly eating certain emulsifiers, thickeners, and other ultra-processed additives can alter the composition and function of your gut microbiome (North Clin Istanb, 2019).

These shifts, known as gut dysbiosis, might contribute to the development of kidney disease (Front Med, 2021).

This link exists because imbalances in gut bacteria can result in the increased production of uremic toxins, which, in turn, can exacerbate local and systemic kidney inflammation.

⚠️ Here is a list of the most common food additives in protein supplements:

• acacia fiber
• acacia gum
• acesulfame potassium
• artificial flavors
• ascorbic acid
• aspartame
• calcium carbonate
• carrageenan
• cellulose gum
• dextrin
• dicalcium phosphate
• dipotassium phosphate
• erythritol
• gellan gum
• guar gum
• gum arabic
• inulin
• locust bean gum
• maltitol
• maltodextrin
• mono- and diglycerides
• ‘natural’ flavors
• rice bran extract
• rice dextrin
• rice hulls
• rosemary extract
• silica
• silicon dioxide
• sodium alginate
• soluble corn fiber
• sorbitol
• soy lecithin
• sucralose
• sunflower lecithin
• tocopherols
• tricalcium phosphate
• xanthan gum
• xylitol
• zinc oxide

As a rule of thumb, if you cannot find it in nature or make it at home, it is probably a food additive.

🚫 Avoid Protein Concentrates and Isolates

You also want to consider avoiding protein concentrates and isolates.

Most protein supplements are made from one or both of these ultra-processed protein sources, which have been mechanically and/or chemically stripped of everything but the protein.

This includes the enzymes, fiber, and other natural digestive aids that help you break them down.

You therefore do not digest them in the same way that you do whole foods, which could affect your gut health.

For example, studies show that regularly eating protein concentrates and isolates might disrupt your gut microbiome (Nutrients, 2018).

It might also cause the formation of toxic byproducts in your gut (Mol Nutr Food Res, 2024).

So instead of ultra-processed protein concentrates or isolates, look for whole-food protein sources like egg whites.

They are more gut-friendly.

Order Samples to see for yourself.

Sources

1. Diabetes Care (Diabetes Care). Chronic Kidney Disease and Risk Management: Standards of Care in Diabetes. 2025.
2. Northern Clinics of Istanbul (North Clin Istan). Food additives and microbiota. 2019.
3. Frontiers in Medicine (Front Med). Microbiome–Metabolome Reveals the Contribution of Gut–Kidney Axis on Kidney Disease. 2021.
4. Critical Reviews in Food Science and Nutrition (Crit Rev Food Sci Nutr). Milk proteins: Processing, gastric coagulation, amino acid availability and muscle protein synthesis. 2023.
5. Nutrients (Nutrients). Effect of a protein supplement on the gut microbiota of endurance athletes. 2018.
6. Molecular Nutrition & Food Research (Mol Nutr Food Res). In vitro fermentation of animal and plant protein isolates by the human gut microbiota under low and high carbohydrate conditions. 2024.

Editorial Guidelines

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This article was written by a Certified Nutrition Coach and reviewed by a Registered Dietitian. We rely on peer-reviewed research and trusted medical sources, and regularly update our content to ensure accuracy and clarity.