What is the best protein powder for constipation?

drink wholesome is the best protein powder for constipation. It is high in fiber and made with a short list of simple ingredients. Order samples to see if our protein powder for constipation is right for you. 

Written by Jack Schrupp & Brittany Adelman, RDN


vegan chocolate protein powder

(41) $39.99 - or subscribe and save up to 15%


3 protein powder samples


How to pick a protein powder for constipation

Does protein powder make you constipated?

Although a common side effect of protein supplements is diarrhea, many people also find that protein powders cause constipation. Protein powder constipation occurs when you have fewer than three bowel movements a week and your poop is hard and difficult to pass. Other symptoms include bloating and stomach pain. Although protein powder constipation affects millions of people every year, it is easily avoidable if you know what ingredients to look out for.

It is worth noting that although protein powder can cause constipation, dietary protein plays an important role in maintaining digestive health and supporting regular bowel movements. For starters, protein is needed for the production of digestive enzymes, which help you break down food. Without adequate protein intake, you would not be able to produce enough digestive enzymes.

Protein is also essential for maintaining a healthy gut microbiome. The gut microbiome consists of trillions of bacteria that help break down complex carbohydrates and fiber, producing short-chain fatty acids that nourish the cells lining the colon. Dietary protein supports the growth of these gut bacteria, ensuring a well-functioning digestive system. 

Basically, if you are struggling to meet your protein needs, adding a protein powder to your diet can actually improve your digestive health. That said, not all protein powders are created equal, and some may do more harm than good.

What causes protein powder constipation?

There are two types of ingredients that tend to cause protein powder constipation. The first is dairy-based proteins like whey and casein. The second is food additives like emulsifiers, thickeners, flavors, and sugar substitutes. To put it simply, both dairy-based proteins and food additives are hard to digest, which can cause a number of GI (gastrointestinal) side effects, including constipation.

There are several other factors that can contribute to protein powder constipation. Here are a few of the most common: 

1. Low fiber intake: Insufficient dietary fiber intake can lead to constipation. Fiber adds bulk to the stool, making it easier to pass. Make sure to include fiber-rich foods in your diet, such as fruits, vegetables, and whole grains.

2. Dehydration: Dehydration can contribute to constipation as it results in dry, hard stools. Make sure you drink enough water throughout the day to stay hydrated. You may also need extra electrolytes to ensure proper hydration, especially if you live an active lifestyle.

3. A sedentary lifestyle: A lack of physical activity can slow down intestinal contractions and contribute to constipation. Make sure to exercise regularly to promote healthy bowel movements.

4. Medication: Certain medications, such as pain relievers, antidepressants, and iron supplements, can cause constipation. If you are experiencing constipation while taking any medication, consult your healthcare provider for possible alternatives.

5. Poor gut health: Bacterial imbalances in your gut, such as small intestinal bacterial overgrowth (SIBO), can disrupt normal gut motility and lead to constipation. If you suspect SIBO or other bacterial-related issues are contributing to your constipation, consult with a healthcare professional for a proper diagnosis.

Understanding all of the possible causes of protein powder constipation is essential for effective management. Protein powder can certainly contribute to constipation, but constipation is usually caused by a number of factors, including those outlined above.


What is the best protein powder for constipation?

The best protein powder for constipation is additive and dairy-free. By avoiding these two common triggers, you can considerably reduce the likelihood that your protein powder makes you constipated. The best protein powder for constipation is also high in fiber.

Fiber rich protein powders can help relieve constipation. Dietary fiber, also known as roughage, is the indigestible part of plants. Unlike other nutrients, it is not broken down and absorbed by the body. Instead, it passes through the digestive tract relatively intact, speeding up digestion by adding bulk to the stool.

In the United States, foods that contain at least 2.5 grams of fiber per serving are considered a “good source of fiber,” and those containing 5 grams or more of fiber per serving are considered “high fiber.” If you are looking for constipation relief, pick a protein powder with at least 5 but no more than 10 grams of fiber per serving. Eating less than 5 grams of fiber may not help normalize your bowel movements, whereas eating more than 10 grams of fiber may cause bloating or diarrhea.

Our vegan protein powders have 5-8 grams of fiber per serving. Most protein supplements, on the contrary, do not contain much (if any) fiber because they are made with protein concentrates and isolates, which have been stripped of everything but the protein. A few companies add fiber to the formulas, but often do so in a way that is utterly unnatural.

One popular brand, for example, adds guar gum to its protein powder to give it a whopping 20 grams of fiber per serving. Not only is this way too much fiber for one sitting, but guar gum is notorious for causing digestive issues. In case you were wondering, the fiber in our vegan protein powders comes from whole almonds. 


drink wholesome is the best protein powder for constipation

drink wholesome is additive-free

The main reason why we make the best protein powder for constipation is that we do not use food additives. Many other protein powders, on the other hand, are full additives like emulsifiers, thickeners, artificial sweeteners, and flavors. 

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

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, maltodextrin, mono- and diglycerides, ‘natural’ flavors, rice bran extract, rice dextrin, rice hulls, rosemary extract, silica, silicon dioxide, sodium alginate, sodium bicarbonate, soluble corn fiber, soy lecithin, sucralose, sunflower lecithin, tocopherols, tricalcium phosphate, xanthan gum, xylitol, zinc oxide

Because they look nothing like real food, food additives are hard to digest and spend extra time in your gut. As a result, they feed your hungry gut bacteria, which produce gas as they eat. Gas, specifically methane gas, slows colonic transit (the amount of time it takes food to travel through the colon), which can lead to constipation. Exactly why this happens is still a mystery, but researchers believe that intestinal gas may reduce motility (spontaneous muscle movement), thereby slowing the movement of food.

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

drink wholesome is dairy-free

Another reason why we make the best protein powder that doesn’t cause constipation is that we do not use dairy-based proteins. Dairy-based proteins like whey and casein are hard to digest, especially for the millions of adults with lactose intolerance. If you have lactose intolerance, you do not have enough of the enzymes needed to break down lactose, the sugar in dairy. As you now know, partially digested lactose feeds the microorganisms living in your gut, causing a surge in gas production and possibly constipation. 

vegan unflavored protein powder lifestyle image 1
vegan chocolate protein powder lifestyle image 2

drink wholesome is made with real foods

A final reason why we make the best protein powder for constipation is that we do not use protein concentrates or isolates. The vast majority of protein powders are made from one or both of these protein sources, which undergo extensive mechanical and chemical processing, sometimes involving solvents like hexane.

Your gut is supposed to digest unprocessed or minimally-processed real foods, not protein concentrates or isolates. This is probably why a growing body of research is finding that regular consumption of processed ingredients like these can alter the composition of your gut microbiome. Your gut microbiome helps you break down and absorb the food you eat. So, when its microbial composition is altered, side effects like constipation can follow

vegan vanilla protein powder lifestyle image 1
vegan unflavored protein powder lifestyle image 2

Instead of using protein concentrates or isolates, we make the best protein powder that doesn’t cause constipation with whole almonds. Almonds are not only high in dietary fiber, which supports healthy and regular bowel movements, but they also contain enzymes and digestive aids that help you digest them. Moreover, almonds have prebiotic effects that improve the diversity and composition of the gut microbiome. Basically, our vegan almond protein powder is perfect for people prone to constipation and other digestive issues.

Tips from a registered dietitian

When it comes to maintaining digestive health while supplementing with protein powder, incorporating the following tips can make all the difference when it comes to your gut health. Here are a few insights and recommendations from Registered Dietitian Brittany Adelman:

1. Stay hydrated: Proper hydration is crucial for healthy digestion. Make sure to drink plenty of water throughout the day, especially when consuming protein powder. Aim for about one-half of your body weight in ounces of water daily to keep your digestive system running smoothly. For example, if you weigh 150 pounds, you would need to drink a minimum of 75 oz of water per day, and 1 additional 8 oz glass for every caffeinated beverage you consume.

2. Choose high-fiber options: Look for protein powders that contain added fiber or consider adding fiber-rich foods such as fruits, vegetables, and whole grains to your shakes or smoothies to increase the fiber content. Fiber helps promote bowel regularity and can counteract the potential constipation-causing effects of protein powder.

3. Introduce protein powder gradually: If you are new to using protein powder, it is important to introduce it into your diet gradually. Start with a smaller serving size and observe how your body responds. Slowly increase the amount over time to allow your digestive system to adjust.

4. Balance your diet: While protein powder can be a convenient source of nutrition, it should not replace whole foods in your diet. Ensure you are consuming a well-rounded, balanced diet that includes a variety of nutrient-rich foods such as lean meats, fruits, vegetables, and whole grains.

5. Stay active: Regular physical activity plays a vital role in maintaining healthy digestion. Engage in a variety of exercises, including aerobic activities, strength training, and flexibility exercises to support optimal digestion and bowel movements.

By incorporating these expert tips into your protein powder regimen, you can enjoy a positive protein powder experience and minimize the risk of constipation.

When to seek medical advice

If you are experiencing constipation and finding it difficult to find relief using home remedies and lifestyle changes, it may be time to seek medical advice. While occasional constipation is common and usually goes away on its own, certain situations may warrant professional intervention. Seek medical advice for constipation if:

1. Your constipation lasts for more than a week

2. You are in severe pain or discomfort

3. You have sudden changes in bowel movement habits

4. Your constipation is accompanied by unexplained weight loss

5. You have noticed a presence of blood in your stool

6. You have a history of gastrointestinal disorders

7. You are experiencing other unusual or concerning symptoms

It is important to remember that seeking medical advice does not necessarily mean you have a serious condition. Your healthcare provider will be able to evaluate your symptoms, perform any necessary tests, and provide guidance and treatment options based on your individual situation.

3 constipation-friendly smoothie recipes

High fiber blueberry cauliflower smoothie


• 1 cup frozen cauliflower florets

• 1/2 cup blueberries

• 1 tablespoon chia seeds

• 1 tablespoon psyllium husk

• 1 serving of drink wholesome vegan vanilla protein powder

• 1 cup unsweetened coconut water

• honey or maple syrup to taste (optional)


Combine all ingredients in a blender and blend until smooth. Add more coconut water if necessary to reach your desired consistency. 

Chocolate banana flaxseed smoothie


• 1 ripe banana

• 1 tablespoon ground flaxseeds

• 1 tablespoon psyllium husk

• 1 serving of drink wholesome vegan chocolate protein powder

• 1/2 cup Greek yogurt (or dairy-free high protein yogurt)

• 1/2 cup unsweetened almond milk

• dash of cinnamon

• ice cubes (optional)


Peel the banana and cut it into chunks. Add all ingredients to a blender and blend until smooth. Adjust the thickness by adding more almond milk if desired.

Smooth move high fiber kiwi smoothie


• 2 ripe kiwis (with skin on for extra fiber)

• 1 tablespoon chia seeds

• 1 tablespoon ground flaxseeds

• 1 serving of drink wholesome vegan vanilla protein powder

• 1 cup spinach leaves

• 1/2 cup unsweetened almond milk

• ice cubes (optional)

• honey or maple syrup to taste (optional)


Peel the kiwis (or leave the skin on for extra fiber – this is a great hack for constipation!) and slice them. Add all ingredients to a blender and blend until smooth. Adjust the consistency by adding more almond milk if needed. 

easy to digest

“I’ve wasted so much money trying to find a protein powder that doesn’t cause painful gas, bloating, and constipation. I started with the sample pack and was sold with my first shake. I really liked the chocolate and mocha flavors as well, but this peanut butter mixed with chocolate almond milk is just *chef’s kiss*. I immediately bought a full size bag, and will definitely be subscribing with my next order. Most protein powders don’t even taste great and STILL upset my stomach, but this is seriously delicious and I have a happy gut. Thank you!” – Natalie

Read more reviews or take the quiz.

(45) $39.99 - or subscribe and save up to 15%


3 protein powder samples


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.