The Best Protein Powders For Sensitive Stomachs – Top 7 Products 2024

The Impact of Sensitive Stomachs on Food Enjoyment

Stomach problems can be a major obstacle to enjoying food. Frequent gas, constipation, irritable bowel syndrome, and other gut health issues can make it necessary to scrutinize everything you eat. From checking condiments to oil types and ingredients, individuals with sensitive stomachs must be meticulous with their diet.

This means they cannot afford to ignorantly indulge in their favorite street foods or tantalizing party dishes. The term “sensitive stomach” is used to describe stomachs that are prone to upset in non-medical contexts. Frequent gas, bloating, nausea, vomiting, constipation, or diarrhea are common symptoms associated with sensitive stomachs.

Some individuals may be able to link their sensitivity to particular foods or circumstances, while others may experience discomfort or digestive issues without a clear cause. While everyone experiences an upset stomach from time to time, individuals with sensitive stomachs experience discomfort, indigestion, or shifting bowel patterns more frequently. Even when seeking dietary supplements, sensitive stomachs can still pose a challenge.

To address this, supplements are designed with sensitive stomachs in mind, including protein powders. If you’re looking for the best protein powders for sensitive stomachs, you’re in luck. This article provides a comprehensive list and description of the best protein supplements for sensitive stomachs.

We’ll also discuss why some protein powders may upset a sensitive stomach. Protein supplements such as hemp protein, plant-based protein, and whey protein are specially formulated to offer similar health benefits as other protein supplements, without sacrificing your stomach’s comfort. Join us as we take a deep dive into the best protein powders for sensitive stomachs.

Understanding the Reasons Behind Protein Powder Upset Stomachs

Protein supplements can sometimes cause stomach upset due to various reasons, which we’ve listed and explained briefly below:

  • Excessive consumption: Consuming more protein supplements than recommended can overload your gut, leaving your digestive tract insufficient time to digest fully. Men and women’s recommended daily protein intake is 56 and 46 grams, respectively, and exceeding this amount can result in discomfort.
  • Sensitive stomach: If you have a sensitive stomach, you may experience discomfort or allergic reactions to some protein supplement ingredients, such as lactose or gluten. Individuals with celiac disease should opt for gluten-free supplements and always read the ingredients label to avoid any allergic reactions.
  • Incorrect timing: Consuming protein supplements at the wrong time can also lead to stomach upset. For instance, consuming them immediately after exercising can cause gastrointestinal distress due to the body’s focus on brain, lungs, ligaments, and muscles during exercise, which slows down the digestive process.
  • Fast consumption: Downing protein shakes too quickly can result in swallowing air, leading to bloating, stomach ache, and abdominal discomfort.

Understanding the reasons behind protein powder upset stomachs can help individuals make informed decisions about their protein supplement intake and avoid any discomfort.

Best Protein Powders For Sensitive Stomachs – Top 7 Products 2023

  • Transparent Labs Whey Protein Isolate – Top Choice
  • PlantFusion Complete Plant Protein – Top Quality
  • KOS Organic Plant Protein – Best Tasting Protein Powder
  • Organic Protein & Superfoods Plant-Based Protein Powder – Best Plant-Based Product
  • LYFE Fuel Daily Essentials Shake – Best Natural Supplement
  • GNC Pro Performance Whey Protein Powder – Reader’s Choice
  • Vega Sport Premium Plant-Based Protein Powder – Best Protein Powder For Athletes

   Test Winner
 KOS Organic Plant Protein image tablePlantFusion Complete Plant Protein image tableTransparent Labs Whey Protein Isolate image table
ProductKOSPlantFusionTransparent Labs
EffectsTop quality
✓ Weight control
Repairs muscles
Energy boost
More energy
Supports muscles
Natural & vegan
Side EffectsNO side effectsNO side effectsNO side effects
Content1100 g450 g1110 g
Dosage39 g30 g37 g
Enough for28 servings15 servings30 servings
Price49,99 Dollar37,97 Dollar59,99 Dollar
 Buy now whiteBuy now whiteBuy now button Original Colour

Test Winner: Transparent Labs Whey Protein Isolate

​Test winner #1
Transparent Labs Whey Protein Isolate Image
Transparent Labs Whey Protein Isolate
  • More energy & focus
  • Natural ingredients
  • Grass-fed cows, no sugars

Transparent Labs Grass Fed Whey Protein Isolate is an exceptional protein supplement that offers a multitude of benefits for individuals striving to enhance their physical fitness and overall well-being. Its superior quality stems from the hormone-free, non-GMO, and grass-fed ingredients, making it an excellent choice for health-conscious individuals who are mindful of what they put into their bodies.

Moreover, the protein supplement’s smooth and creamy consistency adds to its appeal, making it incredibly easy to mix and savor. Although it is priced slightly higher than other similar products in the market, there are ways to make it more affordable.

Nevertheless, for those seeking a safe and effective way to achieve their fitness goals, Transparent Labs Grass Fed Whey Protein Isolate is worth considering. We are confident in our assessment of it as the best whey protein isolate powder and highly recommend it. The protein supplement is a clear winner in terms of quality, taste, and texture, making it a top pick for fitness enthusiasts.

Product features:

Manufacturer: Transparent Labs
Pros: Grass-fed cows, all-natural, different flavors, no additional sugars
Cons: Relative expensive
Rating: ⭐⭐⭐⭐⭐

Second Place: PlantFusion Complete Plant Protein

​Second #2
PlantFusion Complete Plant Protein image
PlantFusion Complete Plant Protein
  • More energy & power
  • GMO-free, vegan-friendly
  • No additional sweeteners

For those with sensitive stomachs, this protein powder is a top choice. It boasts all-natural ingredients and is completely free from any artificial flavors. The protein powder is plant-based, deriving its protein from a blend of organic superfoods like artichokes, algae, and peas, which work together to provide a sustained increase in energy levels.

This particular protein powder is highly regarded and has earned top ratings due to its impressive amino acid content, including branched amino acids at a level of 4g, as well as essential minerals like salt, iron, potassium, and calcium. The brand claims that consuming a protein shake made with this product can offer the body additional amino acids to aid in muscle recovery, repair, and growth.

What sets this protein powder apart is its ease of digestion. It is free from most allergens and contains significant digestive enzymes, making it gentle on the stomach. Moreover, the PlantFusion Complete protein powder is entirely free from artificial sweeteners and flavors, ensuring that each protein shake is comprised entirely of organic ingredients.

Product features:

Manufacturer: PlantFusion
Pros: With digestive enzymes, no additional sweeteners, vegan-friendly
Cons: With proprietary blends
Rating: ⭐⭐⭐⭐

Third Place: KOS Organic Plant Protein

Third #3
KOS Organic Plant Protein Image
KOS Organic Plant Protein
  • More power & energy
  • All-natural & vegan-friendly
  • With money-back guarantee

This vegan protein powder is a top-rated dietary supplement that is perfect for those with sensitive stomachs. It is available in several delicious flavors, including unflavored, salted caramel coffee, vanilla, chocolate peanut butter, chocolate chip mint, chocolate, and even blueberry muffin. This plant-based protein powder is an excellent choice for those looking to lose weight, as it has a low-calorie content and can help to reduce food cravings.

All the ingredients in this protein powder are organic, soy-free, gluten-free, and dairy-free. It includes a blend of high-quality ingredients like quinoa, chia seeds, flax seeds, pumpkin seed protein, and peas. Furthermore, it contains digestive enzymes, including lactase, cellulase, lipase, and amylase, that help your gut digest the protein powder easily.

This protein powder also comes with a 60-day money-back guarantee, so you can receive a full refund if you don’t experience satisfactory results. Drinking a protein shake made with this vegan protein powder provides your body with a balanced blend of essential amino acids, nourishing it from the inside out.

Product features:

Manufacturer: KOS
Pros: Provides more focus and energy, vegan-friendly product, all-natural
Cons: No vitamin D, weight loss effects
Rating: ⭐⭐⭐⭐

Fourth Place: Orgain Organic Protein Powder

​Place 4#
Orgain Organic Protein & Superfoods Plant-Based Protein Powder image
Orgain Organic Protein Powder
  • No major allergens
  • More energy & power
  • Natural ingredients

This plant-based protein supplement is considered one of the best available. It’s made with a blend of brown rice, peas, chia seeds, and other organic dietary fiber sources, with only one gram of sugar per scoop. Additionally, this supplement contains fifty all-natural whole foods, including ancient grains, sprouts, greens, grasses, herbs, and vegetables.

These ingredients are rich in vitamins and minerals, such as vitamin C and B6, pantothenic acid, riboflavin, iron, and thiamin. The product also includes delicious tart berries, strawberries, mango, pineapple, cranberry, and acai.

However, it is essential to note that this protein powder supplement contains erythritol, a synthetic sugar alcohol that can cause insulin resistance, gut dysbiosis, and gastric upset in some individuals. If you do not have any sensitivities to alcohol or sugar, this protein powder is an excellent option for pre- or post-workout smoothies, morning shakes, nourishing beverages, and weight control. It can help speed up lean muscle growth and recovery.

Product features:

Manufacturer: Orgain Organic Protein & Superfoods Plant-Based Protein Powder
Pros: Bountiful whole foods, no major allergens, vegan-friendly
Cons: With erythritol, a synthetic sweetener
Rating: ⭐⭐⭐

Fifth Place: LYFE Fuel Daily Essentials Shake

Place 5#
GNC Pro Performance Protein Powder image
GNC Pro Performance Protein Powder
  • More energy & power
  • Wiith superfoods
  • Natural ingredients

LyfeFuel Daily protein shake is an excellent plant-based protein powder that offers numerous health benefits. This supplement contains a variety of whole foods that work together to boost focus and energy and promote overall health and wellness.

The company uses a sustainable sourcing process and a delicate drying technique to ensure all essential nutrients remain intact, making it easily digestible and absorbed in the stomach. In addition to protein, the supplement also contains fiber and fats that help you feel full for longer and prevent unwanted weight gain.

LyfeFuel Daily protein shake is also packed with antioxidants, antibiotics, and antivirals that promote healthy skin, hair, and nails. The brand offers other blends, including CoEnzyme Q10, Organic Green Blend, vitamin K2, Colony Forming Units (CFU), and Digestive Enzyme Blend. This supplement is suitable for people with sensitive stomachs since it is allergen-free and Non-Gmo.

Product features:

Manufacturer: LYFEfuel
Pros: Contains superfoods, low-carb, third-party-tested
Cons: Relatively pricey
Rating: ⭐⭐⭐

Sixth Place: GNC Pro Performance Protein Powder

Place 6#
GNC Pro Performance image
GNC Pro Performance
  • High protein content
  • Easy to take
  • For weight loss

This particular nutritional supplement boasts a significantly higher protein concentration when compared to other similar protein powders available on the market. It is formulated using only natural ingredients and goes through a strict third-party testing process to ensure its purity, safety, and effectiveness.

By incorporating this supplement into your favorite smoothie or drink, you can effortlessly increase your daily protein intake. The use of natural flavors sourced from organic ingredients places this whey protein powder among the best in its class. Several positive testimonials indicate that this supplement can be easily mixed and added to a variety of foods, such as yogurt, oatmeal, and other preferred meals.

Product features:

Manufacturer: GNC Pro Performance
Pros: Sport certified, easy to mix, weight loss, third-party tested
Cons: Vague nutritional label, expensive
Rating: ⭐⭐⭐

Seventh Place: Jacked Factory

Place 7#
Vega Sport Premium Protein Powder image
Vega Sport Premium Protein Powder
  • With probiotics
  • gluten-free, vegan-friendly
  • No artificial suggars

If you have a sensitive stomach and are in search of pre- and post-workout protein supplements, this particular option is an excellent choice. It has earned a solid reputation for containing a high concentration of protein, which is essential in enhancing athletic and exercise performance and promoting muscle repair, recovery, and restoration.

The dietary supplement is formulated using a combination of peas, sunflower seeds, alfalfa, black pepper, turmeric, tart cherries, and billions of CFU probiotics. Additionally, it contains 5 g of branched amino acids, which promotes muscle development and recovery.

Despite being priced on the higher end compared to other protein powders on the market, this product is well worth the investment. The company’s website is user-friendly and offers a vast range of recipes, including smoothies, that appeal to users.

Product features:

Manufacturer: Vega Sport
Pros: With probiotics, vegan-friendly, gluten-free, no artificial suggars
Cons: Pricey
Rating: ⭐⭐⭐

Tips to Prevent Protein Powder Upset Stomachs

To avoid stomach aches from consuming protein powders, consider the following tips:

  • Stick to the recommended dosage: Follow the recommended daily protein intake for your gender and age group to avoid overloading your digestive system. It’s also essential to ensure the protein supplement is clean and doesn’t contain any harmful additives.
  • Choose all-organic protein supplementations: Organic protein supplements are less likely to contain additives and other harmful ingredients that can cause stomach upset.
  • Consume protein shakes slowly: It’s best to consume protein shakes slowly, especially after a high-intensity workout, to avoid swallowing air, leading to bloating and discomfort.
  • Consume food rich in protein to avoid using excessive dietary supplements to create muscle mass: Eating a well-balanced diet with protein-rich foods such as lean meat, fish, nuts, and seeds can help you meet your daily protein requirements without relying solely on dietary supplements.
  • Check with a healthcare provider: If you have any underlying sensitivities or intolerances, it’s best to consult with a healthcare provider before starting to consume protein supplements.

How To Choose The Best Protein Powder If You Have A Sensitive Stomach

Here are some tips that you should consider when choosing the perfect dietary supplement for a sensitive stomach:

  • Form of protein supplementation
  • Protein source
  • Third-party testing
  • Additional ingredients
  • Brand reputation


What are the best forms of protein supplementation for individuals with sensitive stomachs?

Whey protein isolate and powders sourced from grass-fed cows are generally more tolerable for individuals with sensitive stomachs.

Why should individuals with sensitive stomachs avoid micellar casein?

Micellar casein is difficult to digest and can cause stomach upset for some individuals with sensitive stomachs.

What are some additional ingredients to watch out for in protein powders?

Lactose and artificial sweeteners, such as sucralose and aspartame, may cause digestive issues for some individuals with sensitive stomachs.

Should protein powders be used as meal replacements?

No, protein powders should not be used as a substitute for whole foods or meals. Instead, use them as a supplement to your regular diet.

How can I ensure that the protein powder I choose is suitable for my sensitive stomach?

Look for protein powders that have been third-party tested for purity and quality. Additionally, consider trying a sample or smaller quantity before committing to a larger purchase to see how your body reacts.


If you’re looking for a protein powder that is gentle on your stomach and won’t cause discomfort, consider starting your search with these six leading manufacturers. For individuals with sensitive stomachs, whey protein isolates or powders sourced from grass-fed cows can be a good option.

On the other hand, micellar casein can be challenging to digest and may cause stomach upset for some people.Instead, opt for whey proteins like whey isolate and whey protein powder that are easy to digest and gentle on your stomach. Remember, protein powder supplements should not replace meals entirely.

It’s essential to incorporate natural protein sources like cow’s milk, almond milk, lentils, and fatty fish into your diet along with protein supplements. By combining a balanced diet with the right protein supplement, you can fuel your body and achieve your fitness goals without compromising your digestive health.

Paul Mies has now been involved with test reports and comparing products for a decade. He is a highly sought-after specialist in these areas as well as in general health and nutrition advice. With this expertise and the team behind, they test, compare and report on all sought-after products on the Internet around the topics of health, slimming, beauty and more. The results are ultimately summarized and disclosed to readers.