How to Find the Best Protein Powder for IBD

📌 Overview and Key Takeaways

This is a Certified Nutrition Coach’s guide on how to find the best protein powder for IBD.

Discover how to safely meet your protein needs while managing inflammatory bowel disease.

Last Updated
Jul 22, 2026

Author and Medical Reviewer

Jack, CNC

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

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Disclaimer: This communication is for general informational purposes only and is not a substitute for personalized medical advice.

Protein Powder for IBD

What Is IBD?

Inflammatory bowel disease (IBD) is an umbrella term for two conditions that cause chronic inflammation in your digestive system: Crohn’s disease and ulcerative colitis.

Both cause symptoms like diarrhea and stomach pain.

They can also lead to severe weight loss and malnutrition.

For some people, IBD is only a mild illness, but for others, it is a serious condition that significantly impacts daily life.

Although IBD is not caused by what you eat, healthcare professionals agree that food plays an important role in managing symptoms.

Certain foods can make symptoms worse, whereas others can help reduce symptoms and promote healing.

Paying attention to what you eat and how your body responds is thus essential for managing IBD.

Is Protein Powder Good for IBD?

The best diet for IBD is one that meets your individual nutritional needs and helps you manage your symptoms.

But creating a diet plan for your specific condition is complex because there is no single IBD diet that works for everyone.

Foods that trigger your symptoms might be different from foods that trigger symptoms in others.

Specialized IBD diets are also controversial because they can be very restrictive.

Despite the personalized nature of IBD diets, however, some guidelines apply to everyone with IBD.

Eating adequate protein is important for people with IBD, especially during an active flare to repair intestinal tissue, boost immunity, and prevent any muscle loss.

Inflammation from Crohn’s disease or ulcerative colitis increases your protein needs by up to 25% (Lancet Gastroenterol Hepatol, 2023).

People in an active IBD flare should aim to eat 1.2-1.5 grams of protein per kilogram of body weight daily (Eur J Nutr, 2021).

This lowers to 0.8-1.0 g/kg for those in remission.

It is worth adding that chronic inflammation can reduce your ability to absorb nutrients from food, which can lead to malnutrition and nutrient deficiencies

Making protein intake a priority between flares is thus essential.

Protein helps prevent weight loss, muscle wasting, and loss of strength.

Dietary protein might also help repair your intestinal barrier (Anim Sci J, 2020).

Keep in mind that protein powder should not replace whole food protein sources.

In other words, you should try to get most of your protein from foods like chicken, eggs, fish, legumes, nuts, and seeds.

Getting enough protein from whole foods alone can be challenging for those with dietary or lifestyle restrictions related to IBD, however.

This is where protein powder can help.

Adding protein powder to your diet is an easy way to meet your total daily protein needs and fill in nutritional gaps, especially on days when eating feels like a chore.

That being said, not all protein powders are suitable for people with IBD.

What Is the Best Protein Powder for IBD?

Many protein shakes and powders contain ingredients that can cause painful symptoms for someone with IBD and might even contribute to the development of the disease.

These problematic ingredients include food additives, dairy-based proteins, and protein concentrates and isolates.

🚫 Avoid Food Additives

Regularly eating emulsifiers, thickeners, and other ultra-processed additives can upset your stomach.

Regularly consuming certain additives can also alter the composition and function of your gut microbiome (North Clin Istanb, 2020).

These shifts, known as gut dysbiosis, have been linked to both Crohn’s disease and ulcerative colitis (Int J Mol Sci, 2022).

Research shows that an imbalanced gut microbiome weakens your intestinal barrier, which can cause inflammatory damage to your digestive system (Front Microbiol, 2019).

⚠️ Here is a list of the most common food additives in protein shakes and powders:

• 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

If you cannot find an ingredient in nature or make it at home, it should not be in your protein powder.

🚫 Avoid Dairy-Based Proteins

Dairy-based proteins like whey and casein, although not a problem for everyone, can cause digestive issues too.

This is usually because they contain lactose – a sugar many individuals with sensitive stomachs cannot fully digest.

But you might be sensitive to dairy-based proteins even if you are not lactose intolerant.

For starters, the digestion of some caseins releases a bioactive peptide that has been linked to digestive issues (Adv Nutr, 2017).

Casein also forms a gel-like substance in your stomach that slows down digestion (Crit Rev Food Sci Nutr, 2023).

For sensitive individuals, particularly true for those with cow’s milk protein allergy or intolerance, slower digestion can contribute to bloating, constipation, and other side effects.

🚫 Avoid Protein Concentrates and Isolates

If you have a sensitive stomach, you might also want to avoid protein concentrates and isolates.

Most protein shakes and powders 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, one study shows that regularly consuming protein concentrates and isolates might disrupt your gut microbiome (Nutrients, 2018).

Another study shows that it could cause the formation of toxic byproducts in your gut (Mol Nutr Food Res, 2024).

Although further research is needed, individuals with sensitive stomachs can play it safe by choosing protein shakes and powders made from minimally-processed protein sources like egg whites and almonds.

They are more gut-friendly.

Order Samples to see for yourself.

Sources

1. The lancet. Gastroenterology & Hepatology (Lancet Gastroenterol Hepatol). Inflammation and malnutrition in inflammatory bowel disease. 2023.
2. European Journal of Nutrition (Eur J Nutr). Habitual dietary intake of IBD patients differs from population controls: a case-control study. 2021.
3. Animal Science Journal (Anim Sci J). Regulation of the intestinal barrier by nutrients: The role of tight junctions. 2020.
4. Northern Clinics of Istanbul (North Clin Istanb). Food additives and microbiota. 2020.
5. International Journal of Molecular Sciences (Int J Mol Sci). Dysbiosis in Inflammatory Bowel Disease: Pathogenic Role and Potential Therapeutic Targets. 2022.
6. Frontiers in Microbiology (Front Microbiol). Infectious Threats, the Intestinal Barrier, and Its Trojan Horse: Dysbiosis. 2019.
7. Advances in Nutrition | Journal (Adv Nutr). Systematic Review of the Gastrointestinal Effects of A1 Compared with A2 β-Casein. 2017.
8. 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.
9. Nutrients (Nutrients). Effect of a Protein Supplement on the Gut Microbiota of Endurance Athletes: A Randomized, Controlled, Double-Blind Pilot Study. 2018.
10. Molecular Nutrition & Food Research (Mol Nutr Food Res). In Vitro Fermentation of Animal and Plant Protein Isolates by the Human Gut Microbiota Under High and Low 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.