What to look for when buying protein powder.

Written by Jack Schrupp and reviewed by Ella McGonagle, M.S. Nutrition

Wondering what to look for when buying protein powder? Learn more about the top ingredients to avoid when buying protein powder.

“If you have a sensitive gut, you need simple ingredients.”

-Brittany Carpenter, MS, RDN/LDN

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3 ingredients to look  for when buying protein powder.

What to look for.

What to avoid.

Why drink wholesome?

What to look for.


There are literally thousands of protein powders out there, each with different ingredients and health claims. Some are made with whey and claim to help you build muscle. Others are made with peas and claim to help you lose weight. How the heck are you supposed to know which one is right for you? Given how crowded the supplement market has become, shopping around for a protein powder can be stressful, and expensive. There is nothing worse than spending $50 on a protein supplement, only to find out that it upsets your stomach or that you hate how it tastes. If you feel lost, and are wondering what to look for when buying protein powder, you have come to the right place. 

The first thing most people look at when buying protein powder is the Nutrition Facts. Although the nutritional content of your protein supplement is important, it is not the most important thing. Instead of worrying about how much protein is in each serving, focus on the ingredients. The ingredients list is by far the most important indication of whether or not a protein powder is good for you.

To put it simply, you should look for a short list of ingredients consisting primarily, if not entirely, of real foods. Real foods are foods that can be found in nature. Examples include eggs, fruits, fish, meat, nuts, vegetables, and whole grains. Many people do not think twice about the fact that the ingredients in their protein powder look nothing like real food, which is absurd, because protein powder itself is just food. The only advantage protein powder has over other sources of dietary protein is convenience.; in most cases, it is easier to boost your protein intake by making a protein shake than it is by cooking a meal.

Again, there are many different types of protein powder (egg white, pea, whey, etc.), and any of them can help you boost your protein intake. In other words, no one type of protein powder is necessarily better than another, as long as you are eating a balanced diet. Not all protein supplements are created equal, however, and some can have serious side effects and long term health consequences. Keep reading to learn more.

What to avoid.


The average protein powder is full of ingredients that can upset your stomach and cause permanent gut damage. The top 3 offenders are food additives, dairy-based proteins, and protein isolates. 99% of protein supplements contain one or more of these ingredients. In the article below, I will explain why you should avoid food additives, dairy-based proteins, and protein isolates, and point you towards a protein powder free from all 3.

Why drink wholesome


drink wholesome is additive-free.

One of the reasons why we make the best protein powder is that we do not use food additives. Most protein powders, on the other hand, are full of food additives. Although not necessarily bad for you in small quantities, additives can add up quickly (especially if you drink a protein shake every day) and cause gastrointestinal (GI) side effects like bloating, constipation, diarrhea, gas, and stomach pain. This is because food additives are hard to digest, and sit in your gut for longer than food should, which gives your gut bacteria more time to eat. As they eat, these bacteria produce gas, which causes bloating and stomach pain. Gas also slows colonic transit (the amount of time it takes food to travel through the colon), and can lead to constipation. In the long term, food additives can disrupt regulatory pathways in the intestine, which can result in the development of inflammatory bowel disease (IBD) and systemic inflammatory disorders.

When buying protein powder, one ingredient to avoid in particular is artificial sweeteners. Artificial sweeteners are among the most harmful food additives in the long term as they alter the composition of your gut microbiota (the collection of microorganisms that help you digest food). This can lead to serious, chronic GI problems, widespread inflammation, and permanent damage to the gut microbiome. Some sweeteners, especially sugar alcohols like xylitol, are also poorly absorbed by the gut (meaning they feed those hungry gut bacteria), and cause diarrhea because they draw water into your intestine. Now you finally have something to blame for those post-protein shake trips to the bathroom!

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

acacia gum, acesulfame potassium, artificial flavors, aspartame, carrageenan, cellulose gum, dextrin, dextrose, erythritol, gellan gum, guar gum, gum arabic, inulin, locust bean gum, “natural” flavors, maltodextrin, rice syrup solids, soy lecithin, silica, sucralose, sunflower lecithin, xanthan gum, xylitol

When it comes to identifying food additives, go with your gut. 😉 As a rule of thumb, they are the ingredients that you cannot pronounce. Food additives are not the only thing to look out for when buying protein powder, however. There are several other ingredients that can upset your stomach.

the alternative:

Protein Matrix Comprised of (Whey Protein Concentrate,  Whey Protein Isolate, Calcium Caseinate, Micellar Casein, Milk Protein Isolate, Egg Albumen, Glutamine Peptides), Polydextrose, Sunflower Creamer (Sunflower Oil, Corn Syrup Solids,  Sodium Caseinate, Mono- and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols), Natural and Artificial Flavor, MCT Powder (Medium Chain Triglycerides, Nonfat Dry Milk, Disodium Phosphate, Silicon Dioxide), Lecithin, Cellulose Gum, Salt, Yellow 5, Sucralose, Acesulfame Potassium, Papain, Bromelain.

*This is the actual ingredient list of one of the best-selling protein powders in the United States.

drink wholesome is dairy-free.

Another reason why we make the best protein powder is that we do not use dairy-based proteins. Many protein powders are made with whey and casein, which are byproducts of cheese and yogurt production, and known to cause digestive issues, especially for people with lactose intolerance and irritable bowel syndrome (IBS). Over one in three Americans are lactose intolerant, and the prevalence of IBS is somewhere between 10 and 15 percent in the United States. It follows that you may be lactose intolerant or have IBS and not even know it. Irritable bowel syndrome (IBS) is a poorly understood condition, and it is unclear why dairy triggers symptoms. Lactose intolerance, on the other hand, is clearly understood. People with lactose intolerance are unable to fully digest lactose, the sugar in dairy. As you just learned, partially digested food feeds the bacteria in your gut, which produce gas and cause stomach pain.

drink wholesome is made with real foods.

A final reason why we make the best protein powder is that we do not use protein isolates. Most protein powders, on the contrary, are made with protein concentrates and/or isolates, foods stripped of everything but the protein. They are listed on the ingredient list as “collagen protein,” “pea protein, and” “whey protein” as opposed to “collagen,” “peas,” and “whey.” I will not go into the details, but protein concentrates and isolates undergo heavy mechanical and chemical processing before becoming protein powder. Sometimes, manufacturers use chemical solvents like hexane to isolate (separate) the protein from the food. This means that what you end up putting into your body looks nothing like real food. 

If you think about it, your gut was designed to digest naturally occurring foods, not laboratory formulated imitations, so if you feed it anything but real food, it might get upset. The long term implications of eating processed foods are still not well understood, but more and more research is finding that it can alter the composition of your gut microbiota, and lead to permanent damage to the gut microbiome. It is therefore in your best interest to avoid protein powders made with protein concentrates and isolates. 

Instead of protein concentrates or isolates, we make the best protein powder with egg whites and almonds. Egg whites are simply pasteurized and dried before becoming protein powder. Almonds are just roasted, pressed, and ground. Minimally-processed ingredients like these are an easy to digest, gut-friendly alternative to protein concentrates and isolates. Unless you have a sensitivity or allergy to eggs, egg white protein is the best protein for your gut. Egg whites are low in fiber, low-FODMAP, naturally alkaline, and have the highest protein digestibility-corrected amino acid score (PDCAAS) of any whole food. Our customers have experienced fewer digestive issues with egg white protein than with any other type of protein. If you cannot eat eggs, try our almond protein powder. Unlike protein concentrates or isolates, almonds contain lots of healthy fats, fiber, and other nutrients like calcium and vitamin E. We prefer almonds to other minimally-processed plant protein sources because they are more gut-friendly. Research suggests that almonds possess prebiotic properties and can improve the diversity and composition of the gut microbiome.

★★★★★

easy to digest

“I’ve had Crohn’s disease for 20+ years and it’s always been hard to find a protein powder my stomach can handle. I’ve had no problem digesting drink wholesome AND it tastes great. I highly recommend this protein powder if you have IBS or Crohn’s.” – Jesse

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drink wholesome is the best protein powder.

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This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. drink wholesome is not intended to diagnose, treat, cure or prevent any disease.

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