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It’s a bit of a catch-22 trying to find one of the best protein powders that’s both low-calorie and free of sugar substitutes because food and supplement companies use sugar substitutes to reduce the carb and calorie count, so there’s more room for the good stuff. While many of us don’t mind slurping down some sucralose in the name of accurate macro counting, others actively avoid artificial sweeteners. (We do have a roundup of the best sugar-free protein powder, though, if you’d like to peruse.) These sweeteners are manufactured compounds designed to mimic the taste of sugar without delivering the same number of calories as sugar.
That’s why if you ever see a version of a dessert or beverage that’s labeled as “reduced sugar” or “diet,” it’s a pretty fair bet it contains some artificial sweeteners. As a dietitian, I’m not entirely against them, as they can help improve the quality of life of certain populations, such as those with diabetes.
I can understand the preference for keeping artificial sweeteners out of your diet the same as I understand those who avoid added sugars altogether. So, in that spirit, let’s take a look at what the GGR team has tested, rated, and declared the best protein powders without artificial sweeteners.
Medical disclaimer: This article is intended for educational and informational purposes only. It is not intended as a substitute for medical advice. For health advice, contact a licensed healthcare provider.
Best Protein Powder Without Artificial Sweeteners
- Best Protein Powder Without Artificial Sweeteners Overall: Transparent Labs Whey Isolate
- Best-Tasting Protein Powder Without Artificial Sweeteners: Legion Whey+
- Best Vegan Protein Powder Without Artificial Sweeteners: Ritual Essential Protein Daily Shake
- Best Budget Protein Powder Without Artificial Sweeteners: Wellah Protein Your Whey
- Best Whey Protein Powder Without Artificial Sweeteners: Momentous Grass-Fed Whey
- Best Organic Protein Powder Without Artificial Sweeteners: Orgain Organic Grass-Fed Whey
Best Protein Powder Without Artificial Sweeteners Overall: Transparent Labs Whey Isolate
Good for: People who want both a lack of sugar substitutes and a lack of fillers
Best Overall
Transparent Labs 100% Grass-Fed Whey Protein Isolate
Product Highlights
- High-quality whey protein isolate
- 28 grams of protein per serving
- 15 flavors to choose from
- $1.99 per serving
Pros & Cons
Pros
- High-quality protein
- No artificial sweeteners, food dyes, or preservatives
- Lots of flavors to choose from
- Good customer reviews
- Whey isolate may be easier to digest for some people
- Subscribe and save 10% plus free shipping
Cons
- Price per serving on the high end
- Some reviews complain that it's too sweet
Bottom Line
Our testers love Transparent Labs 100% Grass-Fed Whey Protein Isolate because we know exactly what's in it, and almost every flavor we've tried is a 5 out of 5 on taste. Yes, it's a little more expensive than other protein powders but you get what you pay for.
Best-Tasting Protein Powder Without Artificial Sweeteners: Legion Whey+
Good for: Those who want an indulgent flavor from their sugar-free protein powder
Best For Flavor Variety
Legion Whey+
Product Highlights
- Sourced from small dairy farms in Ireland
- Over 5 g of BCAAs per serving
- Non-GMO and animal welfare approved
- Third-party tested for banned substances
Pros & Cons
Pros
- Low in carbs and fat but high in protein
- Natural ingredients
- Money-back guarantee
- Made with ethically-sourced milk
- Lots of flavor options
- Subscribe and save 10%
Cons
- Comparably high cost per serving
- May be clumpy when mixed
- Some customers thought flavor was too sweet, or in some cases lacked flavor
Bottom Line
Legion Whey+ is a clean, sustainable protein powder that also is macro-friendly and a great option for anyone looking for a clean protein supplement. Many of our testers have bought this with their own money because they love the taste and easy mixability.
Best Vegan Protein Powder Without Artificial Sweeteners: Ritual Essential Protein Daily Shake
Good for: Those who want a dairy-free protein that actually tastes good
Best Vegan
Ritual Essential Protein Daily Shake
Product Highlights
- Organic pea protein powder
- 20 g of protein per serving
- Formulated to support adults 18-49
- Third-party tested
- 150 mg of choline per serving
Pros & Cons
Pros
- Soy-free, gluten-free, and vegan-friendly
- No artificial sweeteners
- Complete amino acid profile
- Non-GMO
- USA-grown peas
Cons
- Only comes in one flavor
- Price per serving is on the high end
- Velcro bag closure ineffective
Bottom Line
Ritual’s Essential Protein Daily Shake has 20 grams of protein per serving and 150 milligrams of chlorine (to support brain and nervous system function). This protein powder from Ritual is third-party tested and Informed Sport Certified, which means this formula has been screened for over 250 banned substances.
Best Budget Protein Powder Without Artificial Sweeteners: Wellah Protein Your Whey
Good for: Those looking to save money on a high-quality protein powder
Best Budget
Wellah Protein Your Whey
Product Highlights
Pros & Cons
Pros
- Gluten-free formula
- Third-party tested
- Affordable at under $1.50 per serving
- Limited ingredients—only 5
Cons
- Only 4 flavors and no unflavored options
- Limited customer reviews
- Lower protein content than many competitors at 20 grams
- Vanilla flavor contains allergen soy
Bottom Line
Wellah’s Whey Protein contains only 5 ingredients and provides 20 grams of protein per serving. It is an affordable protein option at under $1.50 per serving but it also doesn’t contain as many grams of protein as many competitors. There are limited but positive customer reviews. Some customers were frustrated that the advertising was not clear about soy being present in the vanilla flavor.
Best Whey Protein Powder Without Artificial Sweeteners: Momentous Grass-Fed Whey
Good for: People who want a whey protein that’s easy on their stomach
Best Whey
Momentous Essential Grass-Fed Whey
Product Highlights
- Grass-fed whey protein isolate
- Cold-pressed with a micro-processing filtration
- ProHydrolase enzyme blend
- Protein is sourced from Irish cows
Pros & Cons
Pros
- Clean ingredients
- Third-party verified
- Mixes well
- High-quality
- Bioavailable
- Subscribe and save 10% (25% off your first order)
- Free shipping on orders over $75
- Whey is sourced from grass-fed cows that are hormone-free, steroid-free, and antibiotic-free
Cons
- Unflavored may clump when mixing
- Expensive
Bottom Line
If you are willing to pay a premium price for a high-quality grass-fed whey protein, the Momentous brand is a solid choice. It is cold-pressed and put through a micro-processing filtration which is supposed to preserve the protein’s amino acid profile. While we cannot confirm that, we know it tastes darn good and did not upset any stomach during our testing.
Best Organic Protein Powder Without Artificial Sweeteners: Orgain Grass Fed Whey Protein Powder
Good for: Individuals looking for an organic protein powder without artificial sweeteners
Best Organic without Artificial Sweeteners
Orgain Grass Fed Whey Protein
Product Highlights
- 21 grams of grass-fed whey protein per serving
- Gluten free, soy free, no sugar added, kosher, non-GMO, carrageenan free
- Available in vanilla bean and chocolate fudge
- 100% New Zealand-sourced grass-fed whey protein
Pros & Cons
Pros
- Mixes well
- Clean ingredients
- Virtually sugar free
- non-GMO certified
Cons
- Contains stevia extract and erythritol
- Mixed reviews on taste
Bottom Line
Orgain Organic Grass Fed Whey Protein Powder delivers 21 grams of clean, grass-fed whey protein that's great on its own or when used for baking.
Other Protein Powder Without Artificial Sweeteners We Researched
- Naked Whey: We really like this one, but it’s unflavored, which inherently means no artificial sweeteners, so it didn’t make the list.
- Klean Athlete Klean Isolate: This one is very expensive, but we like the formulation a lot.
- Truvani Plant Protein: One of our favorite-tasting plant-based protein powders, but again, it’s very expensive at about $2.50 per serving.
How We Picked and Tested the Best Protein Powder Without Artificial Sweeteners
If you’re reading this, it’s a safe bet that you’re looking to keep your intake of artificial sweeteners and sugar substitutes low. So, we took that into account, along with some other factors, when compiling this list.
Other Artificial Ingredients
If our readers are looking for a protein powder without artificial sweeteners, they probably wouldn’t trust us too much if we gave them a list of protein powders full of fillers, additives, and other artificial ingredients. So, we wanted to be sure the brands we chose kept these ingredients to a minimum.
RELATED: Protein Powder for Recovery
Trusted Brands
As part of our mission, we strive to recommend brands that aren’t just well-known in the fitness industry but are trusted for their integrity and ability to deliver high-quality products. As a team of dietitians, trainers, and athletes, we have personally used all of the products listed, so we know first-hand what we’re recommending and wouldn’t pass along a product we didn’t believe in.
Protein Content
Though we’ve debunked the myth5 that the body can only absorb 20 grams of protein at a time, there’s still a benefit to choosing a protein powder containing 20 to 25 grams of protein per serving.
Not only can it make your protein intake more efficient if you’re trying to hit certain macros, but the reason that myth came about in the first place is the misinterpretation of studies that have shown that 20 grams of protein is where the pathway for maximal muscle building begins6.
Third-Party Testing
Though it’s not a requirement to choose a third-party tested protein powder, we’d like to say that that’s our preference if all things are ideal. Even if a protein powder isn’t third-party tested, dietary supplements with transparent labeling and no proprietary blends tend to be more reliable in terms of safety and potency.
Benefits of Protein Powder Without Artificial Sweeteners
Whether you’re going for weight loss, better muscle recovery, or you just want a low-calorie protein source without sugar substitutes, there are plenty of benefits. Let’s look at a few reasons to take protein powder without artificial sweeteners.
Better for Sensitive Stomachs
Though the science is far from conclusive, some research shows that zero-calorie sweeteners may negatively impact your gut health, especially if you already have a sensitive tummy. Thus unflavored protein and protein without artificial sweeteners are a much better option. Lactose-free protein powder is a good thing to try if you have this issue.
Less Aftertaste
If you’ve ever had a drink with the common sweeteners saccharin and aspartame, you know they have a pretty sharp and noticeable aftertaste. This means that even if you choose your favorite flavor, it might still be an unpleasant drinking experience.
Though sweeteners like sucralose taste a little close to cane sugar with much less of an aftertaste, it’s still a manufactured sugar, and it’d be cheating to include it on this list.
Appetite Control
Foods with too much refined sugar, cane sugar, and corn syrup tend to spike blood glucose, which can throw off your hunger cues later in the day. They also just aren’t generally good for wellness when taken in excess. Because many people take supplements like casein protein powder to prevent overeating (especially during weight loss), taking a protein powder with a lot of added sugar defeats the purpose.
Shelf-Stable & Portable
One of the many beauties of protein powder is that you can store and carry it nearly anywhere. This is important as many food sources of essential amino acids, like eggs, cheese, seafood, and poultry, usually need to be refrigerated. However, having a portable source of protein that you only need to add water to makes protein intake more convenient for busy adults on the go.
Helps Meet Protein Needs
If you’re over 50, train a very high volume, have a large amount of muscle mass, or are going through a cutting cycle, your protein needs may be higher than most. These high protein needs can be difficult (and expensive) to meet through food alone.
RELATED: Mass Gainer Pros and Cons
This is where protein powder comes in. Mix unflavored protein powder in your food, make protein smoothies for breakfast, or have protein shakes before bed to boost your numbers. Whichever way you choose to fit it in, drinking protein powder is much easier than eating a meal with an equal amount of protein.
Dosing and Interactions
Dosing for your protein powder should be as directed by the label, unless you’re advised otherwise by a registered dietitian or other healthcare professional.
Very high doses of protein powder can cause several side effects, such as intestinal distress, acne, nausea, thirst, bloating, and headaches. However, protein powder is generally very safe, unless you have liver disease, kidney problems, or lactose or milk sensitivities.
Third-Party Testing
The third-party certification of protein powders isn’t necessary, but it can provide extra protection and is always our first pick.
The brands that proudly bear the seal of third-party testing also inform you that an impartial source has tested their protein powder and has found that it is free of heavy metals, banned substances, or other harmful ingredients. Some of which may have been added accidentally during processing or added intentionally.
RELATED: High-Protein Foods For Muscle-Building
If you’re an athlete who has to submit to drug testing, it’s recommended you only choose third-party tested supplements of any kind, not just protein powder, to limit your exposure to ingredients that may be harmful to your overall wellness.
Buying Guide: What To Look For in Protein Powder Without Artificial Sweeteners
Want to shop for a protein powder without zero-calorie sweeteners? Here are some other things to look out for while you’re on the hunt:
Sugar Content
If you think artificial sweeteners are bad, wait until you hear about sugar. Hundreds of studies have shown the association between sugar and chronic inflammation7 in the body.
The reason this is important is that chronic inflammation leads to chronic diseases like type 2 diabetes if it gets bad enough. While a little sugar here and there is fine, if you plan on chugging your protein powder copiously and often, it could start to take a toll.
RELATED: Best Low-Sugar Protein Bars
Presence of Sugar Alcohols
Most of us have already heard of aspartame (aka Nutrasweet or Equal), saccharin (Sweet’N Low), and sucralose (Splenda). However, fewer are familiar with the likes of xylitol and erythritol which are technically not artificial sweeteners. Artificial sweeteners have zero calories, but sugar alcohols have about 2.6 calories per gram, meaning that products that use sugar alcohols can still claim to be “sugar-free” but not calorie-free.
As mentioned, these products can cause serious GI distress if taken in excess, which is why I caution my athletes against consuming them before any type of performance, especially a competition. However, natural sweeteners like monk fruit and stevia extract do not have the same effects.
Protein Source
Whey protein isolate is probably the most commonly consumed form of protein supplement in various forms, be it protein bars, protein shakes, or even protein chips. However, we realize it’s not the best option for everyone, especially those who can’t handle lactose.
RELATED: Best Protein Chips
So, we wanted to choose protein powders for a variety of diets and digestive systems. This means choosing la actose-free protein powder that contains sources of protein that still deliver the essential amino acids needed for muscle growth and maintenance.
Price
A clean protein powder that’s free of artificial sweeteners, fillers, and additives can come at a price—literally. It’s an unfortunate truth that higher quality means higher cost. Though powders full of maltodextrin and corn syrup are more affordable, this may also mean they’re lower quality and, in some cases, have less protein.
While protein powder is hardly a superfood, it’s likely going to be something you’ll be ingesting often. So, it’s important to keep the price per serving low so you don’t break the bank in the name of gains.
Protein Powder Without Artificial Sweeteners: FAQs
Which protein shake does not have artificial sweeteners?
Plenty of shakes on the market don’t contain artificial sweeteners. The protein powders on our list are a great place to start, but having a good understanding of protein powder labels can help you avoid sweeteners when shopping for other brands as well.
Which whey protein has no artificial sweeteners?
Here are some of our favorite whey protein powders that don’t have artificial sweeteners:
Best Protein Powder Without Artificial Sweeteners Overall: Transparent Labs Whey Isolate
Best-Tasting Protein Powder Without Artificial Sweeteners: Legion Whey+
Best Vegan Protein Powder Without Artificial Sweeteners: Ritual Essential Protein Daily Shake
Best Budget Protein Powder Without Artificial Sweeteners: Wellah Protein Your Whey
Best Whey Protein Powder Without Artificial Sweeteners: Momentous Grass-Fed Whey
Best Organic Protein Powder Without Artificial Sweeteners: Orgain Organic Grass-Fed Whey
What protein shakes have the cleanest ingredients?
Clean protein shakes contain zero or very few fillers, artificial flavors or sweeteners, and other ingredients that are not backed by science. After years of researching and testing 100+ protein powders, we identified these as some of the cleanest on the market:
Best Clean Protein Powder Overall: Transparent Labs Whey Isolate
Best Clean Plant-Based Protein Powder: Ritual Essential Protein Daily Shake
Best-Tasting Clean Protein Powder: Legion Whey+
Best Organic Clean Protein Powder: Organifi Complete Protein
Best Clean Collagen Protein Powder: Transparent Labs Grass-Fed Collagen Hydrolysate
Best Clean Protein Powder for Athletes: Klean Athlete Klean Isolate
Best Clean Protein Powder for Weight Loss: Huel Black Edition
Best Clean Vegan Protein Powder: Gainful Vegan
Best Clean Casein Protein Powder: Naked Micellar Casein
Best Clean Whey Protein Powder: Momentous Essential Grass-Fed Whey Protein
Which protein powder is best without side effects?
Most protein powders won’t cause you any noticeable or harmful side effects. However, some protein supplements may not be appropriate if you suffer from allergies or sensitivity to the ingredients, such as lactose or dairy. In this case, it’s best to simply avoid these ingredients.
RELATED: Whey Protein Side Effects
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any diseases.
References
- Babault N, Païzis C, Deley G, et al. Pea proteins oral supplementation promotes muscle thickness gains during resistance training: a double-blind, randomized, Placebo-controlled clinical trial vs. Whey protein. J Int Soc Sports Nutr. 2015;12(1):3. Published 2015 Jan 21. doi:10.1186/s12970-014-0064-5
- Townsend JR, Morimune JE, Jones MD, et al. The Effect of ProHydrolase® on the Amino Acid and Intramuscular Anabolic Signaling Response to Resistance Exercise in Trained Males. Sports (Basel). 2020;8(2):13. Published 2020 Jan 22. doi:10.3390/sports8020013
- Ruiz-Ojeda FJ, Plaza-Díaz J, Sáez-Lara MJ, Gil A. Effects of Sweeteners on the Gut Microbiota: A Review of Experimental Studies and Clinical Trials [published correction appears in Adv Nutr. 2020 Mar 1;11(2):468]. Adv Nutr. 2019;10(suppl_1):S31-S48. doi:10.1093/advances/nmy037
- Vlachos D, Malisova S, Lindberg FA, Karaniki G. Glycemic Index (GI) or Glycemic Load (GL) and Dietary Interventions for Optimizing Postprandial Hyperglycemia in Patients with T2 Diabetes: A Review. Nutrients. 2020;12(6):1561. Published 2020 May 27. doi:10.3390/nu12061561
- Schoenfeld BJ, Aragon AA. How much protein can the body use in a single meal for muscle-building? Implications for daily protein distribution. J Int Soc Sports Nutr. 2018;15:10. Published 2018 Feb 27. doi:10.1186/s12970-018-0215-1
- Tang JE, Moore DR, Kujbida GW, Tarnopolsky MA, Phillips SM. Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men. J Appl Physiol (1985). 2009;107(3):987-992. doi:10.1152/japplphysiol.00076.2009
- Ma X, Nan F, Liang H, et al. Excessive intake of sugar: An accomplice of inflammation. Front Immunol. 2022;13:988481. Published 2022 Aug 31. doi:10.3389/fimmu.2022.988481
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