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The 5 Best Protein Powder Without Artificial Sweeteners (Reviewed)

May 13, 2024

Best protein powder with no artificial sweeteners by Robor Fitness

Are you on the lookout for a protein powder with no artificial sweeteners? You're not alone. Artificial sweeteners, those clever food additives mimicking sugar's taste, are in many products we love. But let's face it – not everyone's thrilled about these synthetic pals.

Ever wondered why? It's simple. Research, like this study on animals (1), rings alarm bells. They're linked to weight gain and, worse, diseases. Even more concerning, some human studies suggest potential carcinogenic effects. Makes you think, right?

Here's the kicker – your protein shakes don't need these artificial taste enhancers to be delicious. We're about to show you how. The brands we've discovered are a testament to that – they're flavorful, healthy, and, yes, completely free of artificial sweeteners. Join us as we unveil these game-changers.


5 Best Protein Powders With No Artificial Sweeteners - At a Glance

To be clear, our quest for the best protein powder is guided by a straightforward principle: purity and health. We've sifted through countless options to bring you the cream of the crop, each rigorously free from artificial sweeteners recognized by the FDA, including:

  1. Acesulfame K
  2. Sucralose
  3. Saccharin
  4. Aspartame
  5. Neotame
  6. Advantame

These sweeteners, often hidden in many dietary supplements, are absent in our chosen products. Instead, we've focused on natural, health-friendly alternatives that don't compromise taste or quality.

Here's a glance at our top choices, each excelling in its unique category:


Product Name



Legion Whey Protein Powder

Best Overall

High-quality whey, excellent taste, no fillers, Labdoor Certified

Transparent Labs Whey Protein Isolate

Runner Up

Pure whey isolate, zero artificial additives, great mixability

Bulk Supplements Whey Protein

Most Affordable Option

Cost-effective, simple ingredients, versatile use

Orgain Organic Protein

Best Organic

Organic ingredients, vegan-friendly, great for meal replacement

Garden of Life

Best Vegan Option

Plant-based, environmentally conscious, nutrient-rich


Each of these products stands out for its commitment to health and natural ingredients, promising a protein boost without artificial baggage.


Best Overall: Legion Whey Protein Powder

Legion protein powder


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Check Price on Legion Use Code: “Robor” for 20% off


Key Features

  • Serving size: 32 grams
  • Protein per serving: 23 grams (71%)
  • Price per serving: $1.80
  • Carbs: 3 grams
  • Fats: 1 gram
  • Suitable for vegans: No

Legion Whey Protein Powder tops our list as the Best Overall protein powder, and here's my experience with why it deserves this spot.

Made entirely from high-quality whey protein isolate, it's a game-changer for anyone looking for a high-quality protein shake completely free from artificial sweeteners. What really sets it apart is its source – small dairy farms in Ireland. These farms are known for their grass-fed cows, a practice that translates into some of the healthiest, cleanest dairy you can find anywhere in the world.

But it's not just about where it comes from. This powder is free from hormones and antibiotics, aligning perfectly with my preference for natural and healthy ingredients. It's non-GMO, lactose-free, and sugar-free, catering to various dietary needs.

What impressed me most was its nutritional profile. Packed with 22 grams of protein per serving, this whey powder is more than just a supplement; it's a powerful tool for muscle growth and repair. The abundance of essential amino acids, including branched-chain amino acids (BCAAs), makes a difference. Whether after a workout or as a meal replacement, it's been crucial in helping me achieve my fitness goals faster.

Depending on the flavor, each serving contains only about 100-120 calories, making it an excellent choice for calorie-conscious diets. And the taste? It's surprisingly delicious and mixes effortlessly with water or my favorite milk, making it easy to incorporate into my daily routine.

Lastly, knowing it's manufactured in the USA in NSF- and GMP-inspected facilities adds an extra layer of trust and quality to the product. In my journey with Legion Whey Protein Powder, it's not just a protein supplement; it's a cornerstone of my fitness and health regimen.



  • Made from 100% whey protein isolate, ensuring a pure protein source without excess fats or carbs.
  • Sourced from grass-fed cows on small Irish dairy farms, providing some of the cleanest and healthiest dairy available.
  • Free from hormones and antibiotics, catering to health-conscious consumers.
  • Non-GMO, lactose-free, and sugar-free making it suitable for various dietary needs.
  • Rich in essential amino acids, including BCAAs, aiding in muscle growth and repair.
  • Easy to mix and incorporate into diets, compatible with water or milk.
  • Manufactured in NSF- and GMP-inspected facilities in the USA, ensuring quality and safety.



  • The sweetness level might be too high for some users, especially those who prefer less sweet flavors.
  • The taste of stevia, used as a natural sweetener in the product, may not appeal to everyone. Some users might find its specific flavor profile unappealing.
  • The cost reflects the high-quality ingredients


Runner Up – Transparent Labs Whey Protein Isolate

Transparent Labs grass fed protein powder


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Key Features

  • Serving size: 33 grams
  • Protein per serving: 28 grams (84%)
  • Price per serving: $2.00
  • Carbs: 1 grams
  • Fats: 0.5 grams
  • Suitable for vegans: No

Transparent Labs Whey Protein Isolate earns its spot as our runner-up with its exceptionally clean and effective formula. This naturally flavored protein powder stands out in the market for several reasons.

Firstly, it's made from naturally-fed, hormone-free whey. You won't find any artificial sweeteners, food dyes, gluten, or preservatives in this product, making it a top choice for those who are mindful of what they consume. This commitment to purity is a huge plus for me, as I always strive to put the best into my body.

The protein content is impressive – 28 grams per serving, sourced from 100% grass-fed, grass-finished American dairy cattle. Its high protein-by-weight ratio is remarkable, ensuring you're getting a substantial protein boost with minimal sugar or fat. This aspect is essential for anyone looking to increase their protein intake without unwanted extras.

Its benefits extend beyond just high protein content. This whey protein isolate is designed to enhance recovery and build muscle. The high bioavailability means it's gentle on the stomach and easy to digest – a crucial factor for those who've experienced digestive discomfort from other protein sources.

Moreover, it contains all nine essential amino acids in a balanced ratio. This is vital for muscle protein synthesis and achieving muscle-building and fitness goals. The balanced amino acid profile assures me that I'm supporting my muscles in the best way possible.

Lastly, the ease of digestion cannot be overstated. The powder is formulated for optimal digestive health, so you can say goodbye to bloating, gas, or other digestive issues often associated with high-protein diets. This makes it an ideal choice for anyone looking to increase their protein intake comfortably and effectively.



  • Made from naturally-fed, hormone-free whey and free of artificial sweeteners, food dyes, gluten, and preservatives.
  • Highly bioavailable protein that's easy on the stomach, enhancing recovery and promoting muscle growth.
  • It contains all nine essential amino acids in a balanced ratio, crucial for muscle protein synthesis.
  • High protein content



  • May be priced higher compared to other protein powders, which could be a consideration for budget-conscious consumers.
  • The high protein content per serving might be more than needed for some users, especially those with lower protein requirements or on a restricted diet.


Most Affordable Option – Bulk Supplements Whey Protein

Bulk supplements unflavoured whey protein


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Key Features

  • Serving size: 30 grams
  • Protein per serving: 23 grams (77%)
  • Price per serving: $0.89
  • Carbs: 1 gram
  • Fats: 2.5 grams
  • Suitable for vegans: No

Bulk Supplements Whey Protein emerges as the most affordable and versatile option, earning its place as the cheapest protein powder without compromising quality. This whey protein concentrate stands out for its simplicity and purity. It's unflavored, which makes it incredibly adaptable for various uses, from smoothies and milkshakes to baking cakes and pancakes. The protein content is noteworthy, with an impressive 80% protein percentage, one of the highest in the industry.

What I appreciate most about this product is its all-around utility. Its unflavored nature means it can easily blend into any recipe, enhancing protein content without altering the taste significantly. For instance, adding it to your favourite cake recipe or Kraft Dinner goes unnoticed, a testament to its versatility. Even in smoothies, it allows the natural flavors of other ingredients to shine through.

Manufactured in the USA using raw materials from FDA-compliant facilities, Bulk Supplements Whey Protein is packed in a GMP-certified environment. It's an excellent addition for anyone looking to increase their protein intake cost-effectively and flexibly. Its low-calorie, low-sugar, and low-fat profile also makes it suitable for various dietary needs, including those on a keto diet.

However, it's worth noting that its unflavored nature might not be appealing when mixed only with water due to its slightly bitter taste and creamy texture. Also, the packaging, a Ziploc-style sealed bag, can be tricky to handle once opened.



  • High protein percentage (80%) for maximum efficacy.
  • Versatile for cooking, baking, and smoothies.
  • Competitively priced, making it a cost-effective option.
  • Manufactured in the USA in FDA-compliant, GMP-certified facilities.
  • Suitable for various diets, including keto, due to its low-calorie, low-sugar, and low-fat content.


  • The unflavored nature may not be palatable when mixed with water.
  • Packaging can be cumbersome, with potential issues in sealing the bag post-opening.
  • The lack of a scoop makes measuring portions tedious.


Best Organic – Orgain Organic Protein

Orgain organic protein powder


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Key Features

  • Serving size: 46 grams
  • Protein per serving: 21 grams (45%)
  • Price per serving: $1.40
  • Carbs: 15 grams
  • Fats: 4 grams
  • Suitable for vegans: Yes

Orgain Organic Protein Powder, now sporting a new look and label, is a top contender for the best organic protein powder on the market. In its appealing Chocolate Peanut Butter flavor, this product brings a powerhouse of organic, plant-based nutrition.

Each serving offers 21 grams of protein sourced from peas, brown rice, chia seeds, and 2 grams of organic dietary fiber. It's impressively low in net carbs and utterly free from added sugar, tallying up to just 150 calories per serving.

What sets it apart is its commitment to clean, inclusive nutrition. It's USDA organic, vegan, gluten-free, dairy-free, lactose-free, and soy-free. Additionally, it's kosher, non-GMO, carrageenan-free, and devoid of artificial ingredients. This makes it an ideal choice for almost any dietary need or preference.

The versatility of Orgain Organic Protein is another big plus. It mixes smoothly with water and milk or can be added to your favorite protein shake recipe. It's not just for drinks, either – you can use it in baking to boost the protein content of your cakes, muffins, brownies, or cookies.

Orgain Organic Protein is more than just a supplement; it's a convenient, healthy nutrition solution for anyone and everyone, athlete or not. Whether you're looking for a meal replacement, a smoothie booster, building lean muscle, aiding muscle recovery, or needing something for pre or post-workouts, this protein powder is up to the task.



  • Includes a variety of protein sources like pea, brown rice, and chia seeds.
  • Low in net carbs and free from added sugars, supporting a healthy diet.
  • Certified USDA organic, vegan, gluten-free, dairy-free, lactose-free, soy-free, kosher, and non-GMO.
  • Free from carrageenan and artificial ingredients, ensuring clean nutrition.
  • Versatile for both drinks and baking, enhancing the nutritional value of various recipes.
  • Suitable for various dietary needs, including meal replacements and workout nutrition.



  • As a plant-based protein, it might not provide some individuals the same level of satiety as animal-based proteins.
  • Being an organic product, it might be priced higher than non-organic alternatives.


Best Vegan Option – Garden of Life

Garden of life plant based protein powder


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Key Features

  • Serving size: 42 grams
  • Protein per serving: 30 grams (72%)
  • Price per serving: $2.13
  • Carbs: 7 grams
  • Fats: 3 grams
  • Suitable for vegans: Yes

Garden of Life's Sport Organic Plant-Based Protein stands out as the best vegan supplement for building muscle. Its commitment to high-quality, organic ingredients is evident in its certification as USDA organic, Non-GMO Project Verified, and NSF Certified for Sport. Additionally, it's vegan, gluten-free, dairy-free, soy-free, contains no added sugars, and is also carrageenan-free.

Each serving of this protein powder packs 30 grams of complete protein and over 5 grams of BCAA amino acids, glutamine & glutamic acid, crucial for muscle recovery and growth. Its unique protein blend includes organic pea protein, organic sprouted navy bean, organic sprouted lentil bean, organic sprouted garbanzo bean, and organic cranberry seed protein, providing a comprehensive amino acid profile​​​​.

Garden of Life also incorporates an organic high-antioxidant blend, including organic tart cherries, organic apples, organic turmeric, organic goji berries, and organic blueberries. This not only adds to the nutritional value but also aids in faster recovery​​. Moreover, with 2 billion CFU probiotic blend per serving, it supports immune health, a key aspect for anyone engaged in regular physical activity​​.

This protein powder comes in two flavors: Vanilla and Chocolate, both offering a distinct, mellow flavor that is modestly sweet and well-balanced, avoiding the overly sweet taste common in many plant-based protein powders​​​​. Its fine, concentrated texture allows for easy mixing in smoothies, juices, and other recipes, making it a versatile addition to a variety of foods​​.



  • High-quality, organic plant-based protein.
  • Rich in BCAAs and essential amino acids for muscle recovery.
  • Contains beneficial antioxidants and probiotics.
  • Free from common allergens and artificial ingredients.
  • Available in well-balanced, pleasant flavors.


  • The price might be slightly higher compared to non-vegan alternatives.
  • Limited flavor options compared to some other brands.
  • May not be suitable for those who prefer more intensely flavored protein powders.



What Are Artificial Sweeteners?

Artificial sweeteners are food additives that replicate the sweetness of sugar without the associated calories. They are used widely in food and beverage products for those looking to reduce sugar intake, manage weight, or control blood sugar levels.

As of December 2020, the FDA has approved six artificial sweeteners as generally recognized as safe (GRAS) when used as food additives. These include:

  1. Saccharin
  2. Aspartame
  3. Acesulfame Potassium (Ace-K)
  4. Sucralose
  5. Neotame
  6. Advantame

Interestingly, two naturally-derived sweeteners, Stevia (Rebaudiana Bertoni) and Monk Fruit (Luo Han Guo), have not yet been included in the FDA's list of approved artificial sweeteners.

However, GRAS notices have been submitted for certain types of steviol glycosides from Stevia and extracts from Monk Fruit. These notices indicate that although they aren't officially categorized as artificial sweeteners by the FDA, they are recognized for their safety and are widely used as sugar substitutes (2)​​.

Artificial sweeteners offer a sweetening option without the calories of sugar, but their use and safety are often subjects of debate in nutritional science and health circles.

Related Article: The Best Protein Powders Without Stevia


What Are the Artificial Sweetener Alternatives?

Alternatives to artificial sweeteners are natural sweeteners, which include options like stevia, monk fruit extract, raw honey, cane sugar, coconut sugar, and Reb-M. These natural sweeteners are derived from plants or other natural sources and are often favored for their more natural production processes and perceived health benefits.

In the context of whey protein powders, those labeled as sugar-free and free from artificial flavors often use natural sweeteners such as stevia or monk fruit extract for flavoring. Alternatively, some protein powders may be completely unflavored, avoiding sweeteners altogether. These natural sweeteners provide a healthier option for those looking to avoid artificial sweeteners while still enjoying a touch of sweetness in their products.



Stevia plant leaves

Stevia is the most common natural sweetener used today. Derived from the leaves of the Stevia plant (Stevia rebaudiana), it's known for its exceptional sweetness with virtually no calories. The FDA recognizes certain high-purity steviol glycosides extracted from Stevia as Generally Recognized as Safe (GRAS).

This acknowledgement by the FDA indicates that when used in moderation, Stevia is a safe and excellent substitute for sugar. Its natural origin and safety profile make it a preferred choice for those looking to replace sugar and avoid artificial sweeteners in their diet.


Monk Fruit

Monk Fruit, also known as Luo Han Guo, is another popular natural sweetener. It's celebrated for its low to zero-calorie content, making it an attractive alternative for those watching their calorie intake. Extracts from Monk Fruit are known for their high level of natural sweetness, often many times sweeter than sugar.

One of the most appealing aspects of Monk Fruit as a sweetener is its taste. Its flavor profile closely resembles actual sugar, making it an excellent choice for those who want to avoid the artificial taste that can come with some sugar substitutes. Its natural origin and excellent taste make it a desirable alternative to traditional sweeteners.


Raw Honey

Raw honey is a natural sweetener that comes directly from the beehive without undergoing the processing that regular honey typically goes through. This means raw honey retains more of its natural nutrients, including antioxidants, vitamins, and minerals. It has a rich, complex flavor that varies depending on the types of flowers from which the bees have collected nectar.

Raw honey's natural composition and unique flavor profile make it a favorite among those seeking a natural and wholesome alternative to processed sweeteners. Its nutritional content, health benefits, and delightful taste set it apart from other sweetening options.


Coconut Sugar

Coconut trees

Coconut sugar, also known as coconut palm sugar, is a natural sweetener derived from the sap of the coconut palm tree. It is collected from the flower bud stem of the coconut palm and then processed to produce granulated sugar. Coconut sugar is appreciated for its low glycemic index compared to regular table sugar, making it a better option for maintaining steady blood sugar levels.

It has a flavor similar to brown sugar with a slight caramel-like taste, making it a popular choice in baking and cooking. Coconut sugar retains some nutrients in the coconut palm, including minerals like iron, zinc, calcium, potassium, short-chain fatty acids, polyphenols, and antioxidants.


Cane Sugar

Sugar canes

Cane sugar, extracted from sugarcane, is a natural sweetener used for centuries. It's made by crushing sugarcane to extract the juice, which is then boiled down to form sugar crystals. Cane sugar is more processed than raw honey or coconut sugar but is still less processed than white sugar, retaining some of the natural molasses found in sugarcane. This gives it a richer flavor and color compared to refined white sugar. While cane sugar is a natural sweetener, it is similar to white sugar in terms of calorie content and effects on blood sugar levels.



Reb-M, short for Rebaudioside M, is a sweet compound in the Stevia plant. It's one of the many steviol glycosides in Stevia but is particularly noted for its sugar-like taste, making it highly sought after as a natural sweetener. Reb-M is present only in small amounts in the Stevia plant, so producing it in large quantities for commercial use involves a more complex process.

Typically, Reb-M is produced through a bioconversion process. This involves using enzymes to convert the more abundant steviol glycosides in the Stevia leaf, like Rebaudioside A, into Reb-M. This bioconversion process allows for Reb-M production at a scale and purity suitable for use in food and beverages, offering a taste closer to that of sugar but without calories.


Benefits of Avoiding Artificial Sweeteners


One of the primary benefits of avoiding artificial sweeteners is the matter of taste. Many people find that artificial sweeteners have a distinct flavor that differs significantly from natural sugar. This taste is often described as more chemical or metallic, which can be off-putting for some.

In contrast, natural sweeteners have a more pleasing and familiar taste profile, similar to regular sugar, without the aftertaste commonly associated with artificial sweeteners. This makes natural sweeteners a preferred choice for those sensitive to the taste differences in artificial sweeteners.


Improved Gut Health

Avoiding artificial sweeteners can lead to improved gut health. Research indicates that some artificial sweeteners may negatively impact the gut microbiota, a community of beneficial bacteria in the digestive tract (3). These microorganisms are crucial in digestion, nutrient absorption, and overall health.

Certain artificial sweeteners have been found to alter the balance and function of these gut bacteria, potentially leading to digestive issues and other health concerns. You can avoid these adverse effects by choosing natural sweeteners and support a healthier gut microbiome.


Reduce Health Risks

Reducing the intake of artificial sweeteners can lower health risks. A large cohort study has linked the use of certain artificial sweeteners, particularly aspartame and acesulfame-K, with an increased risk of cancer (4). These findings are crucial as they contribute to the ongoing re-evaluation of food additive sweeteners by global health agencies like the European Food Safety Authority. However, more research is needed to establish these risks definitively.

Acesulfame potassium, commonly known as acesulfame K, contains methylene chloride, a known carcinogen (5). There are concerns that methylene chloride could potentially impact cognitive functions and contribute to cancer risk. However, the FDA has not mandated further long-term studies into its effects on humans. This highlights the need for cautious use of artificial sweeteners and consideration of their potential health impacts.


Avoid Unnecessary Weight Gain

Avoiding artificial sweeteners like sucralose, widely known as Splenda, can benefit weight management. Despite its popularity since FDA approval over two decades ago, concerns about its potential health risks have been raised. Notably, a 2005 study indicated that sucralose might lead to weight gain rather than loss (6).

This counterintuitive effect was linked to an insulin spike triggered by the sweet taste of sucralose. This insulin response could lead to hypoglycemia, subsequently increasing food intake to compensate. Hence, choosing natural sweeteners might help avoid such unintended effects on weight.


The Final Say:

Shifting away from artificial sweeteners and opting for natural alternatives can significantly impact overall health and well-being. The benefits are noteworthy, from natural sweeteners' more pleasing taste profiles to their less disruptive effects on gut health.

While the conversation around health risks, such as potential cancer links and cognitive impacts, continues to evolve, erring on the side of caution seems prudent. Significantly, avoiding artificial sweeteners could also aid in better weight management, removing the paradoxical weight gain associated with some artificial sweeteners.

As we become more aware of what we consume, choosing sweeteners becomes not just about taste but about nurturing a healthier lifestyle.


Recommended Articles: 

Top 5 Fat burning supplements

Pre-workout Vs Protein Powder: What's Best? 


References & Further Reading

  1. Tandel, K. R. (2011). Sugar substitutes: Health controversy over perceived benefits. Journal of Pharmacology and Pharmacotherapeutics, 2(4), 236–243.
  2. Nutrition, C. F. F. S. a. A. (2017, December 19). High-Intensity sweeteners. U.S. Food And Drug Administration.
  3. Suez, J., Korem, T., Zilberman-Schapira, G., Segal, E., & Elinav, E. (2015b). Non-caloric artificial sweeteners and the microbiome: findings and challenges. Gut Microbes, 6(2), 149–155.
  4. Debras, C., Chazelas, E., Srour, B., Druesne-Pecollo, N., Esseddik, Y., De Edelenyi, F. S., Agaësse, C., De, A., Lutchia, R., Gigandet, S., Huybrechts, I., Julia, C., KesseGuyot, E., Allès, B., Andreeva, V. A., Galán, P., Herçberg, S., Deschasaux, M., & Touvier, M. (2022). Artificial sweeteners and cancer risk: Results from the NutriNet-Santé population-based cohort study. PLOS Medicine, 19(3), e1003950.
  5. Wang, C., Wang, R., Cai, H., Daimon, C. M., ScheibyeKnudsen, M., Bohr, V. A., Turkin, R., Wood, W. H., Becker, K. G., Moaddel, R., Maudsley, S., & Martin, B. (2013). Long-Term artificial sweetener Acesulfame potassium treatment alters neurometabolic functions in C57BL/6J mice. PLOS ONE, 8(8), e70257.
  6. Tandel, K. R. (2011b). Sugar substitutes: Health controversy over perceived benefits. Journal of Pharmacology and Pharmacotherapeutics, 2(4), 236–243.


Thomas D
Thomas D


Thomas is a dedicated fitness enthusiast with over 12 years of experience in the gym. As a level 2 qualified gym instructor, he combines his passion for working out and nutrition to help others achieve their fitness goals. Thomas stays up to date with the latest fitness research and follows the work of top experts in the field. With a balance of textbook knowledge and real-life experience, he provides practical guidance to help others reach their full potential.

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