# Best Protein Powder Without Artificial Sweeteners > Protein powders without sucralose, ace-K or aspartame, compared on sweetener, protein, certification and taste, plus how to spot sweeteners on a label. - **URL**: https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/ - **Updated**: 2026-11-08 - **Author**: [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/) - **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/) --- Eight powders made without sucralose, acesulfame potassium or aspartame, compared on sweetener, protein per scoop and certification, with a plain guide to reading the label. **How we rank:** We judge every powder on the label, not the marketing: protein per scoop, cost per 25 g of protein, the full ingredient list and third-party testing. No paid placements, and commission never sets a ranking. [Read our methodology](https://www.best-proteinpowder.com/how-we-test/) The best protein powder without artificial sweeteners for most people is Transparent Labs Grass-Fed Whey Isolate: stevia instead of sucralose, 28 g of protein per scoop and Informed Choice certification, per the brand. Momentous Essential is the NSF Certified for Sport option, Levels whey and Truvani's plant protein use monk fruit for people who dislike stevia, and Naked Whey Unflavored contains no sweetener at all. Stevia and monk fruit are not proven to be healthier than sucralose, so choose on taste and tolerance, and always check the ingredient list for the exact flavor you buy. ## Our Top Picks | Award | Product | Why | | --- | --- | --- | | Best Overall | [Transparent Labs 100% Grass-Fed Whey Protein Isolate](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#transparent-labs-grass-fed-whey-protein-isolate) | The best all-round whey for people who want no artificial sweeteners and still want certification and a full protein dose. | | Best NSF Certified | [Momentous Essential Grass-Fed Whey Protein](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#momentous-essential-grass-fed-whey-protein) | The pick for drug-tested athletes who also want to avoid artificial sweeteners. | | Best Monk Fruit Whey | [Levels Grass Fed Whey Protein, Vanilla Bean](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#levels-grass-fed-whey-protein) | The whey to buy if stevia tastes bitter to you but you still want a sweetened shake. | | Best Real-Sugar Option | [Naked Nutrition Chocolate Whey Protein](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#naked-nutrition-naked-whey-chocolate) | The pick for anyone who wants to avoid every sweetener on the market and can spare 5 g of sugar. | | Best Plant-Based | [Garden of Life Sport Organic Plant-Based Protein](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#garden-of-life-sport-organic-plant-protein) | The best plant protein without artificial sweeteners for people who train. | | Best Stevia-Free Plant | [Truvani Organic Plant Based Protein Powder](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#truvani-organic-plant-based-protein) | The plant protein for people who want neither artificial sweeteners nor stevia. | | Best Short-Label Blend | [Just Ingredients Vanilla Protein Powder](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#just-ingredients-protein-powder-vanilla) | A pleasant, short-label blend for everyday use, if you accept paying more per gram of protein. | | Best Unsweetened | [Naked Whey (Unflavored)](https://www.best-proteinpowder.com/best-protein-powder-without-artificial-sweeteners/#naked-nutrition-naked-whey) | The best value if you are happy to flavor your own shakes and want total control. | ## 1. Protein Powders Without Artificial Sweeteners Compared The answer first. These are the eight powders we rank, all made without sucralose, acesulfame potassium, aspartame or saccharin in the flavors we describe. The table shows protein per scoop, calories, sugar, price tier and certification. Price tier reflects cost per 25 g of protein at typical retail prices when we checked. Figures come from each brand's label or listing at the time of writing and vary by flavor, and brands do reformulate, so always confirm the sweetener on the tub you buy. | Product | Protein / scoop | Calories | Sugar | Price tier | Certification | | --- | --- | --- | --- | --- | --- | | Transparent Labs Grass-Fed Isolate | 28 g | About 120-150 | Low | Premium | Informed Choice (per brand) | | Momentous Essential Whey | About 20 g | About 90 | Low | Premium | NSF Certified for Sport (per brand) | | Levels Grass Fed Whey | 24 g | Check flavor | No added sugar | Mid | None confirmed | | Naked Chocolate Whey (2 scoops) | About 25 g | About 160 | About 5 g (coconut sugar) | Premium | None confirmed | | Garden of Life Sport Plant (2 scoops) | About 30 g | About 170-180 | Low | Mid | NSF Certified for Sport (per brand) | | Truvani Plant Protein | About 20 g | About 120-140 | Low | Premium | USDA Organic | | Just Ingredients Vanilla | About 22 g | About 140 | Low | Premium | None confirmed | | Naked Whey Unflavored | About 25 g | About 120 | Lactose only | Budget | None confirmed | Most of these powders replace artificial sweeteners with stevia, monk fruit or a blend of the two. Two take a different route: Naked's chocolate whey uses a little coconut sugar, and Naked Whey Unflavored contains no sweetener at all. Which approach is right depends mostly on taste, and on whether you object to non-nutritive sweeteners as a category or only to the synthetic ones. If you want one recommendation, Transparent Labs Grass-Fed Whey Isolate offers stevia sweetening, 28 g of protein and Informed Choice certification. Readers who dislike stevia should look at Levels whey or Truvani's plant protein, both sweetened only with monk fruit. Anyone who wants to avoid sweeteners entirely should buy an unflavored powder; our [best unflavored protein powder](https://www.best-proteinpowder.com/best-unflavored-protein-powder/) guide covers the plain options in more depth. ## 2. How We Picked We started from ingredient lists, not marketing. A product qualified only if the flavor we describe lists none of the FDA-approved synthetic high-intensity sweeteners: sucralose, acesulfame potassium, aspartame, saccharin, neotame or advantame. We then ranked qualifying powders on protein per scoop, protein quality, sweetener choice, third-party certification and price tier. Our wider approach is explained on the [how we test](https://www.best-proteinpowder.com/how-we-test/) page. We did not taste or test these powders ourselves. Comments about flavor, sweetness and aftertaste reflect what buyers commonly report in reviews, which is useful for spotting patterns such as stevia bitterness but should not be read as our own tasting notes. Every number is hedged because labels vary by flavor and change over time. We gave extra weight to certification because "no artificial sweeteners" is a claim about what is in the tub, and certification is the only routine way an outside body checks that the label matches the contents. Three of our picks carry Informed Choice or NSF Certified for Sport, per the brands. If clean labels are your wider goal, our [best clean protein powder](https://www.best-proteinpowder.com/best-clean-protein-powder/) guide covers contaminant testing and certification in more detail. Finally, we aimed for a spread of sweetener systems rather than eight stevia powders. The list includes stevia-only, monk fruit-only, stevia-and-monk-fruit blends, coconut sugar and unsweetened options, plus both whey and plant proteins, so readers can match the product to their own taste and diet. ## 3. The Best Protein Powders Without Artificial Sweeteners Every product below is made without synthetic high-intensity sweeteners in the flavor we describe, per its ingredient list at the time of writing. We ranked them on protein, sweetener, certification and price tier from labels and brand listings, not hands-on testing; taste comments reflect buyer reviews. Brands reformulate and flavors differ, so check the label before you buy. ### 1. Transparent Labs 100% Grass-Fed Whey Protein Isolate **Award:** Best Overall | **Type:** Grass-fed whey isolate, stevia-sweetened - **Protein per scoop:** 28 g (brand) - **Sweetener:** Stevia - **Third-party testing:** Informed Choice (per brand) - **Best for:** Daily whey without sucralose Transparent Labs built its whey around a no-artificial-anything promise: the brand states it contains no artificial sweeteners, colors or preservatives, and flavored versions use stevia. Per the brand at the time of writing, a roughly 32 g scoop gives 28 g of protein from grass-fed whey isolate in about 120-150 calories depending on flavor. It is Informed Choice and Informed Protein certified, per the brand, which makes it the rare stevia whey with third-party testing behind it. **Bottom line:** The best all-round whey for people who want no artificial sweeteners and still want certification and a full protein dose. **Pros:** - 28 g of protein per scoop, per the brand - Stevia only, no sucralose or acesulfame potassium - Informed Choice and Informed Protein certified, per the brand **Cons:** - Premium cost per 25 g of protein - Some flavors contain peanuts - Stevia aftertaste is noticeable to some buyers, reviews say [Check price on Amazon](https://www.amazon.com/dp/B0CQ32D39X?tag=sktiger-20&linkCode=ll1) ### 2. Momentous Essential Grass-Fed Whey Protein **Award:** Best NSF Certified | **Type:** Grass-fed whey isolate, monk fruit and stevia - **Protein per scoop:** About 20 g (label) - **Sweetener:** Monk fruit + stevia - **Third-party testing:** NSF Certified for Sport (per brand) - **Best for:** Tested athletes Momentous Essential is a small, lightly sweetened scoop: per the brand's label, about 20 g of protein in roughly 90 calories from grass-fed whey isolate, sweetened with monk fruit and stevia. The brand states it is NSF Certified for Sport, the strictest common banned-substance program. Blending monk fruit with stevia is a deliberate choice; the two cover each other's aftertastes better than either alone, and buyers generally describe it as mild. **Bottom line:** The pick for drug-tested athletes who also want to avoid artificial sweeteners. **Pros:** - NSF Certified for Sport, per the brand (verify the flavor) - Monk fruit and stevia rather than sucralose - Light, mild flavor profile, buyers report **Cons:** - Only about 20 g of protein per scoop - Premium price tier - Fewer flavors than mainstream whey [Check price on Amazon](https://www.amazon.com/dp/B09F1SWMFG?tag=sktiger-20&linkCode=ll1) ### 3. Levels Grass Fed Whey Protein, Vanilla Bean **Award:** Best Monk Fruit Whey | **Type:** Grass-fed whey concentrate, monk fruit - **Protein per scoop:** 24 g (label) - **Sweetener:** Monk fruit - **Third-party testing:** None confirmed - **Best for:** Stevia-sensitive tasters Levels' flagship whey is a grass-fed, hormone-free concentrate with 24 g of protein per scoop and no added sugar, per the Amazon listing at the time of writing. The vanilla uses Madagascar vanilla extract and monk fruit, with no stevia, sucralose or artificial flavors. That makes it one of the best options for people who specifically dislike stevia, and buyers rate its taste highly. **Bottom line:** The whey to buy if stevia tastes bitter to you but you still want a sweetened shake. **Pros:** - Monk fruit only, with no stevia or sucralose - 24 g of protein per scoop, per the label - Strong buyer ratings for taste **Cons:** - Concentrate, so more lactose than an isolate - No sport certification we could find - Mid-tier price rather than budget [Check price on Amazon](https://www.amazon.com/dp/B0B64J3C41?tag=sktiger-20&linkCode=ll1) ### 4. Naked Nutrition Chocolate Whey Protein **Award:** Best Real-Sugar Option | **Type:** Grass-fed whey concentrate, coconut sugar - **Protein per serving:** About 25 g (listing) - **Sweetener:** Coconut sugar - **Sugar:** About 5 g - **Best for:** Avoiding all non-nutritive sweeteners Naked's chocolate whey skips high-intensity sweeteners altogether. It has essentially three ingredients: grass-fed whey protein concentrate, cocoa and organic coconut sugar. Per the Amazon listing at the time of writing, a two-scoop serving gives about 25 g of protein, 160 calories and 5 g of sugar. It is the choice for people who would rather have a little real sugar than any non-nutritive sweetener at all. **Bottom line:** The pick for anyone who wants to avoid every sweetener on the market and can spare 5 g of sugar. **Pros:** - No stevia, monk fruit, sucralose or sugar alcohols - Three-ingredient label - About 25 g of protein per serving, per the listing **Cons:** - About 5 g of sugar and 160 calories per serving - Two scoops per serving - Less sweet than mainstream chocolate whey, buyers note [Check price on Amazon](https://www.amazon.com/dp/B0D2PDNT55?tag=sktiger-20&linkCode=ll1) ### 5. Garden of Life Sport Organic Plant-Based Protein **Award:** Best Plant-Based | **Type:** Organic pea-led plant protein, stevia - **Protein per serving:** About 30 g (listing) - **Sweetener:** Stevia - **Third-party testing:** NSF Certified for Sport (per brand) - **Best for:** Vegan athletes Garden of Life's Sport powder pairs a full 30 g plant protein serving with NSF Certified for Sport and USDA Organic status, per the brand's listing at the time of writing. A two-scoop serving runs around 170-180 calories depending on label version, and the ingredient lists we found use stevia rather than artificial sweeteners. Organic certification itself rules out synthetic sweeteners like sucralose, which is a useful shortcut when scanning a shelf. **Bottom line:** The best plant protein without artificial sweeteners for people who train. **Pros:** - About 30 g of plant protein per serving - NSF Certified for Sport and USDA Organic, per the brand - Dairy-free and soy-free **Cons:** - Stevia aftertaste, which plant protein's earthiness can amplify - Two-scoop serving and about 170-180 calories - Thicker, earthier shake than whey, buyers report [Check price on Amazon](https://www.amazon.com/dp/B01N7DTD98?tag=sktiger-20&linkCode=ll1) ### 6. Truvani Organic Plant Based Protein Powder **Award:** Best Stevia-Free Plant | **Type:** Organic pea, pumpkin and chia, monk fruit - **Protein per serving:** About 20 g (listing) - **Sweetener:** Monk fruit - **Third-party testing:** USDA Organic only - **Best for:** Stevia-free vegans Truvani's vanilla lists organic pea protein, organic vanilla, organic pumpkin seed protein, organic monk fruit extract and organic chia seed protein, with about 20 g of protein in roughly 120-140 calories per serving, per retailer listings at the time of writing. The brand states it excludes stevia as well as artificial sweeteners, so it suits plant eaters who find stevia's bitterness hard to live with. **Bottom line:** The plant protein for people who want neither artificial sweeteners nor stevia. **Pros:** - Monk fruit only; no stevia or erythritol - Short, fully organic ingredient list - No gums in the vanilla version **Cons:** - Only about 20 g of protein per serving - Premium cost per 25 g of protein - No sport certification we could confirm [Check price on Amazon](https://www.amazon.com/dp/B0DDQHJ2NG?tag=sktiger-20&linkCode=ll1) ### 7. Just Ingredients Vanilla Protein Powder **Award:** Best Short-Label Blend | **Type:** Grass-fed whey, pea, collagen and chia blend - **Protein per scoop:** About 22 g (label) - **Sweetener:** Stevia + monk fruit - **Calories:** About 140 - **Best for:** Smoothies and oats Just Ingredients is a whole-food-style blend: about 22 g of protein per 33 g scoop from grass-fed whey, pea, collagen and chia, with coconut milk, vanilla bean and cinnamon, sweetened with stevia and monk fruit, in about 140 calories per the label at the time of writing. It avoids artificial sweeteners, sugar alcohols and gums, and buyers praise its creamy texture. **Bottom line:** A pleasant, short-label blend for everyday use, if you accept paying more per gram of protein. **Pros:** - No artificial sweeteners, sugar alcohols or gums - Creamy texture, buyers report - Works in smoothies, oats and baking **Cons:** - Part of the 22 g is collagen, a weaker protein for muscle - About 4.5 g of saturated fat per scoop - Premium cost per 25 g of protein [Check price on Amazon](https://www.amazon.com/dp/B0D1W2865C?tag=sktiger-20&linkCode=ll1) ### 8. Naked Whey (Unflavored) **Award:** Best Unsweetened | **Type:** Grass-fed whey concentrate, one ingredient - **Protein per serving:** About 25 g (label) - **Sweetener:** None - **Third-party testing:** None confirmed - **Best for:** DIY flavoring The surest way to avoid every sweetener is to buy none. Naked Whey has one ingredient, grass-fed whey protein concentrate, and delivers about 25 g of protein in roughly 120 calories per serving, per the label at the time of writing. You add the flavor yourself with fruit, cocoa, cinnamon or a sweetener you choose, which also lets you control the dose of sweetness precisely. **Bottom line:** The best value if you are happy to flavor your own shakes and want total control. **Pros:** - One ingredient; nothing sweet added - Budget-to-mid cost per 25 g of protein - Blends invisibly into smoothies, oats and coffee **Cons:** - Bland and milky in plain water - Concentrate contains some natural lactose - No sport certification we could confirm [Check price on Amazon](https://www.amazon.com/dp/B00XIKPUK4?tag=sktiger-20&linkCode=ll1) ## 4. Artificial vs Natural Sweeteners: What Counts The FDA has approved six high-intensity sweeteners as food additives: saccharin, aspartame, acesulfame potassium, sucralose, neotame and advantame. These are what most people mean by artificial sweeteners. Separately, the FDA has accepted generally recognized as safe notices for highly purified steviol glycosides from the stevia leaf and for extracts of monk fruit, also called luo han guo. Those are plant-derived, though still heavily processed. The two groups are similar in what they do. All of them are intensely sweet, so tiny amounts replace sugar with almost no calories. FDA figures put aspartame and acesulfame potassium at about 200 times sweeter than sugar, sucralose at about 600 times, steviol glycosides at 200 to 400 times and monk fruit extract at 100 to 250 times. The labels differ more than the chemistry might suggest. | Sweetener | Type | Approx. sweetness vs sugar | How it appears on labels | | --- | --- | --- | --- | | Sucralose | Synthetic | About 600x | Sucralose | | Acesulfame potassium | Synthetic | About 200x | Acesulfame potassium, acesulfame K, ace-K | | Aspartame | Synthetic | About 200x | Aspartame, with a phenylalanine warning | | Stevia (steviol glycosides) | Plant-derived | About 200-400x | Stevia leaf extract, Reb A, Reb M | | Monk fruit | Plant-derived | About 100-250x | Monk fruit extract, luo han guo | | Erythritol, xylitol | Sugar alcohol | Less sweet than sugar | Erythritol, xylitol, under carbohydrate | Sugar alcohols such as erythritol and xylitol sit in a third category. They are not artificial sweeteners in the regulatory sense, and many "naturally sweetened" powders use erythritol to bulk out stevia or monk fruit. They are less sweet than sugar and can cause gas or loose stools in larger amounts, which matters if your reason for avoiding artificial sweeteners is digestive rather than philosophical. Then there are caloric sweeteners such as cane sugar, coconut sugar and honey powder. They avoid every non-nutritive sweetener but add sugar and calories, typically 4 to 8 g of sugar per serving in protein powders that use them. Finally, unsweetened powders contain nothing sweet at all beyond the natural lactose in dairy proteins. Knowing these five categories makes a label far quicker to read. ## 5. What the Research Says About Sweeteners The safety picture is more nuanced than either side of the argument suggests. Regulators in the US and Europe consider all the sweeteners above safe within acceptable daily intake limits, and a scoop of protein powder contains a small fraction of those limits. Avoiding artificial sweeteners is a reasonable personal choice, not an urgent safety measure, and this guide is not medical advice. Several findings have raised questions. In 2023 the International Agency for Research on Cancer classified aspartame as possibly carcinogenic to humans, its weakest positive category, while the joint WHO and FAO expert committee kept the acceptable daily intake unchanged at 40 mg per kg of body weight; the FDA disagreed with the IARC classification. Also in 2023, the WHO advised against using non-sugar sweeteners for weight control, and that advice explicitly covers stevia as well as sucralose and acesulfame potassium. Research on the gut microbiome adds another wrinkle. A 2022 study in Cell by Suez and colleagues gave healthy adults saccharin, sucralose, aspartame or stevia at doses below the acceptable daily intake; all four changed gut bacteria, and saccharin and sucralose altered blood sugar responses in some people. That is one study of a few weeks, but it is a reason not to assume plant-derived sweeteners are automatically inert. Sugar alcohols have their own question mark. A 2023 study in Nature Medicine from the Cleveland Clinic found that higher blood levels of erythritol were associated with a greater risk of heart attack and stroke, and a similar finding for xylitol followed in 2024. These are associations, not proof of cause, but people with cardiovascular risk factors may reasonably prefer powders without large amounts of either. Talk to your doctor if you have heart disease, diabetes or another condition and are unsure. > **THE TAKEAWAY** > > **Choose sweeteners on taste and tolerance first** > > No sweetener in a typical protein powder dose has been shown to cause harm, and the evidence for avoiding synthetic sweeteners is suggestive rather than settled. Stevia and monk fruit are reasonable alternatives, but they are not proven to be healthier. If you want certainty, unsweetened is the only option with nothing to debate. ## 6. How to Read the Label Start with the ingredient list, not the front of the tub. On a supplement, sweeteners usually appear in the "Other ingredients" line beneath the Supplement Facts panel. On products sold as food, they appear in the main ingredient list under the Nutrition Facts panel. Either way, look for the names in the table above, including abbreviations like ace-K and branded descriptions like "Reb M stevia". Do not trust front-of-pack wording alone. The FDA has no formal definition of "naturally sweetened", and "natural flavors" refers to flavorings, not sweeteners, so a product can say "natural flavors" and still contain sucralose. Conversely, "no artificial sweeteners" is a specific claim that brands generally make only when it is true, but check the list anyway because flavors within the same range can differ. Use the built-in clues. Any product with aspartame must carry the statement "Phenylketonurics: contains phenylalanine" for people with PKU, which makes aspartame easy to spot. A USDA Organic seal rules out synthetic sweeteners such as sucralose, since they are not permitted in organic products, though organic powders often use stevia, monk fruit or erythritol. Our [best organic protein powder](https://www.best-proteinpowder.com/best-organic-protein-powder/) guide covers that category. Check every flavor, not just the brand. Many companies sweeten their core flavors with stevia but use sucralose in cereal, candy or dessert flavors, or sell one product line with artificial sweeteners and another without. Product names do not always signal this. The ingredient list for the exact flavor and size you are buying is the only reliable source. Finally, look at the carbohydrate lines. A powder that tastes sweet but lists 0 g of sugar and a few grams of carbohydrate may contain erythritol or another sugar alcohol, which appears as part of total carbohydrate and sometimes on its own line. If you react to sugar alcohols, that is the giveaway, and our [best protein powder for sensitive stomach](https://www.best-proteinpowder.com/best-protein-powder-for-sensitive-stomach/) guide covers other common digestive triggers. ## 7. Taste Trade-Offs: Stevia, Monk Fruit, Sugar or Nothing Taste is where avoiding artificial sweeteners costs you something. Sucralose is popular with formulators because it tastes close to sugar with little aftertaste. Stevia, especially the common rebaudioside A extract, has a bitter or licorice-like finish that some people barely notice and others cannot stand, and buyer reviews of stevia powders often split along those lines. Newer extracts like Reb M taste cleaner but cost more. Monk fruit tends to taste rounder and fruitier than stevia, with less bitterness, which is why brands like Levels and Truvani use it alone. It is expensive, so many products blend monk fruit with stevia or erythritol. Blends often taste better than either sweetener on its own, because each masks the other's off-notes, and Momentous and Just Ingredients both take that approach. Real sugar tastes the most natural but adds calories. Naked's chocolate whey uses coconut sugar for about 5 g of sugar per serving, roughly 20 calories, which is a modest cost for many people but not ideal on a low-carb diet or for people managing blood sugar, who should see our [best protein powder for diabetics](https://www.best-proteinpowder.com/best-protein-powder-for-diabetics/) guide. Shakes sweetened only with sugar also tend to taste less sweet than people expect. Unsweetened powder is the most flexible and the least pleasant on its own. Plain whey tastes faintly milky and plain pea tastes earthy. Blended into a smoothie with banana, berries or dates, or stirred into oats with cinnamon, both disappear. If you mainly use protein in recipes, unflavored is often the best choice regardless of sweeteners, because it does not fight with the other ingredients. Plant proteins make the sweetener harder to hide. Pea and rice proteins carry earthy and slightly bitter notes of their own, and stevia's finish can amplify them. If you have tried a stevia plant protein and disliked it, a monk fruit option like Truvani or a dairy whey may suit you better before you give up on the category. ## 8. Who Should Avoid Artificial Sweeteners For most adults, the choice is personal. If sucralose does not bother you and you like how a powder tastes, there is no strong evidence you need to switch. If you prefer to minimize synthetic additives, the powders in this guide make that easy without sacrificing protein quality or certification. Some groups have more specific reasons. People with phenylketonuria must avoid aspartame. People who notice digestive upset, headaches or cravings after artificially sweetened products may do better on stevia, monk fruit or unsweetened powders, even though the evidence on these symptoms is mixed. Parents choosing a powder for a teenager often prefer fewer additives, and our [best protein powder for teens](https://www.best-proteinpowder.com/best-protein-powder-for-teens/) guide covers that question. People managing diabetes or on medication should talk to their doctor or a registered dietitian, both about sweeteners and about how protein shakes fit their meal plan. Pregnant readers should do the same before starting any supplement. None of these sweeteners is known to be dangerous at protein powder doses, but individual advice beats general rules for anyone with a medical condition. Everyone else can treat this as a taste and preference decision. Try a small tub or sample size before committing to a 5 lb bag, especially with stevia, and remember that the protein inside matters more than the sweetener. A well-made, certified powder with a sweetener you dislike is still a better buy than a poorly made one with a sweetener you like. ## 9. Common Mistakes to Avoid ### Trusting "natural flavors" Natural flavors are flavorings, not sweeteners. A tub can say natural flavors on the front and still list sucralose or acesulfame potassium in the ingredients. Read the full ingredient line, including the small print under the Supplement Facts panel, for the specific flavor you are buying. ### Assuming every flavor matches Brands often sweeten core flavors with stevia and use sucralose in cereal, candy or dessert flavors. Do not assume one clean flavor means the whole range is clean. Check the label for each flavor before you reorder or switch. ### Swapping in sugar alcohols without noticing Many naturally sweetened powders use erythritol or xylitol, which can cause bloating or loose stools in larger amounts. If your goal is a gentler stomach, check the carbohydrate lines and ingredient list for sugar alcohols, not just the absence of sucralose. ### Thinking natural means proven safer Stevia and monk fruit are plant-derived, but they are not proven to be healthier than sucralose, and the WHO's 2023 advice on sweeteners covers stevia too. Pick a sweetener on taste and tolerance rather than expecting a health benefit. ### Buying a huge tub of stevia untested Stevia's aftertaste divides people sharply. Buying a 5 lb bag before you know whether you like it is an expensive gamble. Start with a sample or small tub, or choose monk fruit or unflavored if stevia has bothered you before. ## 10. Frequently Asked Questions ### What protein powder has no artificial sweeteners? Transparent Labs Grass-Fed Whey Isolate, Momentous Essential, Levels Grass Fed Whey, Garden of Life Sport Organic Plant, Truvani and Just Ingredients are made without sucralose, acesulfame potassium or aspartame in the flavors we describe, using stevia, monk fruit or both. Naked Whey Unflavored contains no sweetener at all. Always confirm the ingredient list for your flavor. ### Is stevia an artificial sweetener? Not in the regulatory sense. Stevia comes from the leaf of the stevia plant, and the FDA accepts highly purified steviol glycosides as generally recognized as safe, separately from the six synthetic sweeteners it approves as food additives. It is still a processed, non-nutritive sweetener, and the WHO's 2023 advice on sweeteners and weight control includes it. ### Is sucralose in protein powder bad for you? Regulators consider sucralose safe within its acceptable daily intake, and a scoop contains a small fraction of that. Some studies, including a 2022 trial on the gut microbiome, suggest effects in some people, but the evidence is not settled. If you prefer to avoid it, there are good alternatives; if you have a medical condition, ask your doctor. ### Is monk fruit better than stevia? Neither is proven healthier. The difference is mostly taste: monk fruit is generally described as rounder and less bitter, while stevia can leave a licorice-like aftertaste. Monk fruit costs more, so many products blend it with stevia or erythritol. If stevia bothers you, a monk fruit-only powder like Levels or Truvani is worth trying. ### How do I know if my protein powder has artificial sweeteners? Read the ingredient list, usually under Other ingredients on a supplement label. Look for sucralose, acesulfame potassium, acesulfame K, aspartame, saccharin, neotame or advantame. Aspartame also requires a phenylketonurics warning. A USDA Organic seal rules out synthetic sweeteners, but organic powders may still contain stevia or sugar alcohols. ### Does unflavored protein powder have sweeteners? Usually not. Most unflavored powders, such as Naked Whey, contain only the protein and sometimes a little lecithin to help mixing. Check the label anyway, because a few lightly flavored or natural products still add stevia. Unflavored is the only way to avoid sweeteners completely and control sweetness yourself. ### Are protein powders without artificial sweeteners better for weight loss? Not necessarily. The WHO advises against relying on any non-sugar sweetener, including stevia, for weight control, and sugar-sweetened powders add calories. For weight loss, protein per calorie and how filling the shake is matter more than the sweetener. Choose the powder you will use consistently within your calorie target. ## Related Label Guides - [Best Clean Protein Powder](https://www.best-proteinpowder.com/best-clean-protein-powder/): Short labels and third-party testing you can actually verify. - [Best Unflavored Protein Powder](https://www.best-proteinpowder.com/best-unflavored-protein-powder/): Plain powders with nothing sweet added, for baking, coffee and smoothies. - [Best Organic Protein Powder](https://www.best-proteinpowder.com/best-organic-protein-powder/): USDA Organic powders, which rule out synthetic sweeteners by default. ## The Bottom Line Avoiding artificial sweeteners is easy once you know where to look. Read the ingredient list for the exact flavor, look for sucralose, acesulfame potassium and aspartame by name, and remember that natural flavors and front-of-pack wording tell you nothing about sweeteners. Transparent Labs is the best all-round stevia whey, Momentous covers NSF-tested athletes, Levels and Truvani suit people who dislike stevia, and unflavored Naked Whey removes the question entirely. Choose on taste and tolerance, because the protein inside matters more than the sweetener. ## More in Safety & Labels Guides in this category that pair with what you just read. - [Best Sugar-Free Protein Powder](https://www.best-proteinpowder.com/best-sugar-free-protein-powder/) - [Best Clean Protein Powder](https://www.best-proteinpowder.com/best-clean-protein-powder/) - [Best Protein Powder Without Heavy Metals](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/) - [Is Protein Powder Safe?](https://www.best-proteinpowder.com/is-protein-powder-safe/) - [Best Unflavored Protein Powder](https://www.best-proteinpowder.com/best-unflavored-protein-powder/) About the Author [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/), Supplements Desk The editorial team reads the label, the certificate and the price per gram of protein before a powder gets near a ranking -- and says plainly when a cheaper tub does the same job. [Full profile](https://www.best-proteinpowder.com/authors/editorial-team/) | [How we test](https://www.best-proteinpowder.com/how-we-test/)