Brand Review

Are Quest Bars Healthy? We Scored All 16 Flavors

Quest bars rank in the top 5% for fiber and top 27% for protein across 1,000+ bars we've scored. Every flavor earns a B or A ingredient grade. The catch: every single flavor also contains artificial sweeteners and sugar alcohols, no exceptions. The data below shows exactly where Quest stands, flavor by flavor.

16
Flavors scored
B–A
Grade range
4.4–9.3
Score range
18–21g
Protein per bar
170–200
Calories per bar
All
Artificial sweeteners

What the data shows across all 16 Quest flavors

Quest's lineup is one of the most consistent we've scored. Every flavor leads with milk protein isolate and whey protein isolate, every flavor uses erythritol as its primary sweetener, and every flavor contains sucralose. The macros are predictable across the board: 18-21g protein, 1-2g sugar, 170-200 calories. So are the ingredient concerns.

Where flavors differ is in additive load. Simpler ones like Oatmeal Chocolate Chip and Chocolate Peanut Butter have tighter ingredient lists and land in A territory. More complex flavors like Birthday Cake, Lemon Cake, and the Dipped varieties add palm kernel oil, soluble corn fiber, and extra stabilizers, which pulls their scores down toward the low B range. The gap between best and worst is nearly 5 points (9.3 vs. 4.4), meaningful even though both are passing grades.

Ingredient quality grade distribution across all 16 flavors

Here is how Quest's full lineup grades out. Every flavor, not a curated selection.

A
B

3 A (Clean)  ·  13 B (Good)  ·  0 C (Okay)  ·  0 D (Poor)  ·  0 F (Avoid)

Best and worst flavors by ingredient quality

Highest ingredient quality
Oatmeal Chocolate Chip
Score 9.3 · Grade A (Clean)
Protein Leads Quality Protein Source Short Ingredient List
Lowest ingredient quality
Birthday Cake
Score 4.4 · Grade B (Good)
Artificial Sweeteners Processed Oils Sweetener Heavy
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How Quest ranks on macros

Rather than labeling macros good or bad, we rank Quest against every bar in our database so you can judge relative to the full market.

Protein
18–21g
avg 19.9g
Top 27%, above average
Calories
170–200cal
avg 181.9cal
Middle of the pack
Total Sugar
1–2g
avg 1.2g
Top 22% lowest, excellent
Fiber
8–15g
avg 12.1g
Top 5%, exceptional
Total Fat
7–9g
avg 8.1g
Average for the category
Net Carbs
4–8g
avg 5.9g
Top 20% lowest, excellent

Quest's standout number is fiber. Averaging 12g per bar puts them in the top 5% of all bars we track. Pair that with 1-2g of sugar and solid protein and they are one of the most macro-efficient options in the database. The tradeoff is 5-9g of erythritol per bar, which keeps sugar low but can affect digestion for some people.

Ingredient quality patterns across the lineup

Some characteristics appear in every Quest flavor. Others vary. Here is what the data shows across all 16 flavors.

Every flavor
Protein Leads
16/16
Quality Protein Source
16/16
Artificial Sweeteners
16/16
Sugar Alcohols
16/16
Sweetener Heavy
16/16
Most flavors
Processed Oils
11/16
Some flavors
Long Ingredient List
7/16

Sucralose shows up in every single Quest flavor. So does stevia in most of them. Quest built their low-sugar profile around synthetic sweeteners rather than natural alternatives like allulose or dates. That is a deliberate brand choice and the main reason some people skip Quest entirely, even though the protein and fiber numbers are genuinely strong.

All 16 Quest flavors ranked by ingredient quality

Every flavor, every grade, every key macro. Sorted from cleanest to most processed. Tap any row to see the full ingredient list.

Flavor Grade Score Protein Cal Sugar
Oatmeal Chocolate Chip
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 A 9.3 20g 180 1g
Protein20gCalories180Sugar1gFiber14g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Oats, Unsweetened Chocolate, Erythritol, Glycerin. Contains Less Than 2% Of: Cocoa Butter, Sea Salt, Natural Flavors, Cinnamon, Lecithin (Sunflower And/Or Soy), Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar Alcohols
Chocolate Peanut Butter
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 A 8.5 20g 190 1g
Protein20gCalories190Sugar1gFiber11g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Peanuts, Polydextrose (Prebiotic Fiber), Water, Erythritol, Unsweetened Chocolate, Glycerin. Contains Less Than 2% Of: Cocoa Butter, Sodium Caseinate, Natural Flavors, Sea Salt, Stevia Sweetener, Lecithin (Sunflower And/Or Soy), Almonds, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar Alcohols
Double Chocolate Chunk
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 A 8.4 20g 170 1g
Protein20gCalories170Sugar1gFiber12g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Unsweetened Chocolate, Cocoa Processed With Alkali, Glycerin, Cocoa Butter. Contains Less Than 2% Of: Natural Flavors, Sodium Caseinate, Sea Salt, Lecithin (Sunflower And/Or Soy), Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar Alcohols
Chocolate Chip Cookie Dough
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 B 7.7 21g 190 1g
Protein21gCalories190Sugar1gFiber12g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Unsweetened Chocolate, Erythritol, Cocoa Butter, Glycerin. Contains Less Than 2% Of: Natural Flavors, Salt, Lecithin (Sunflower And/Or Soy), Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsSweetener Heavy
Chocolate Brownie
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 B 7.3 20g 170 1g
Protein20gCalories170Sugar1gFiber15g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Cocoa Processed With Alkali, Erythritol, Glycerin. Contains Less Than 2% Of: Natural Flavors, Salt, Stevia Sweetener, Lecithin (Sunflower And/Or Soy), Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsSweetener Heavy
Dipped Chocolate Chip Cookie Dough
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 B 7.3 18g 180 1g
Protein18gCalories180Sugar1gFiber8g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Palm Kernel Oil, Unsweetened Chocolate, Sodium Caseinate, Cocoa Processed With Alkali. Contains Less Than 2% Of: Glycerin, Cocoa Butter, Sea Salt, Natural Flavors, Lecithin (Sunflower And/Or Soy), Sucralose, Stevia Sweetener.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Mint Chocolate Chunk
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 B 7.0 20g 180 1g
Protein20gCalories180Sugar1gFiber14g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Water, Almonds, Cocoa Butter, Erythritol, Cocoa Processed With Alkali, Glycerin, Natural Flavors. Contains Less Than 2% Of: Soluble Corn Fiber, Sodium Caseinate, Palm Kernel Oil, Sea Salt, Lecithin (Sunflower And/Or Soy), Sucralose, Xanthan Gum, Baking Soda, Stevia Sweetener, Peppermint Oil.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Cookies and Cream
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 B 6.8 21g 190 1g
Protein21gCalories190Sugar1gFiber13g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Cocoa Butter, Erythritol, Glycerin, Soluble Corn Fiber, Natural Flavors. Contains Less Than 2% Of: Cocoa Processed With Alkali, Palm Kernel Oil, Sea Salt, Sodium Caseinate, Lecithin (Sunflower And/Or Soy), Xanthan Gum, Baking Soda, Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
S'Mores
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 B 6.6 21g 190 1g
Protein21gCalories190Sugar1gFiber12g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Unsweetened Chocolate, Glycerin. Contains Less Than 2% Of: Natural Flavors, Soluble Corn Fiber, Cocoa Butter, Palm Kernel Oil And/Or Palm Oil, Salt, Cinnamon, Lecithin (Sunflower And/Or Soy), Baking Soda, Stevia Sweetener, Xanthan Gum, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Blueberry Muffin
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 B 6.6 20g 180 2g
Protein20gCalories180Sugar2gFiber13g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Cocoa Butter, Glycerin, Dried Blueberries. Contains Less Than 2% Of: Natural Flavors, Soluble Corn Fiber, Palm Kernel Oil, Salt, Cinnamon, Baking Soda, Sodium Caseinate, Xanthan Gum, Sucralose, Lecithin (Sunflower And/Or Soy), Stevia Sweetener.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Strawberry Shortcake
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 B 6.3 20g 200 2g
Protein20gCalories200Sugar2gFiber10g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Palm Kernel Oil, Sodium Caseinate, Cocoa Butter, Glycerin. Contains Less Than 2% Of: Natural Flavors, Strawberries, Salt, Lecithin (Sunflower And/Or Soy), Sucralose, Vegetable Juice Color.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Dipped Cookies and Cream
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 B 5.9 18g 180 1g
Protein18gCalories180Sugar1gFiber8g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Palm Kernel Oil, Erythritol, Water, Sodium Caseinate, Cocoa Butter, Glycerin. Contains Less Than 2% Of: Soluble Corn Fiber, Natural Flavors, Cocoa Processed With Alkali, Sea Salt, Lecithin (Sunflower And/Or Soy), Xanthan Gum, Baking Soda, Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
White Chocolate Raspberry
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 B 5.8 20g 180 1g
Protein20gCalories180Sugar1gFiber13g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Palm Kernel Oil, Glycerin, Raspberries, Sodium Caseinate. Contains Less Than 2% Of: Natural Flavors, Salt, Lecithin (Sunflower And/Or Soy), Stevia Sweetener, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Apple Pie
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 B 5.7 20g 170 2g
Protein20gCalories170Sugar2gFiber13g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Dried Apple (Ascorbic Acid, Citric Acid, Sodium Chloride), Glycerin, Soluble Corn Fiber. Contains Less Than 2% Of: Natural Flavors, Palm Kernel Oil, Salt, Sodium Caseinate, Cinnamon, Butter (Cream, Salt), Malic Acid, Sucralose, Lecithin (Sunflower And/Or Soy), Baking Soda, Xanthan Gum, Stevia Sweetener.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Lemon Cake
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 B 5.0 20g 180 1g
Protein20gCalories180Sugar1gFiber13g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Almonds, Water, Erythritol, Palm Kernel Oil, Glycerin. Contains Less Than 2% Of: Lemon Powder, Sodium Caseinate, Natural Flavors, Soluble Corn Fiber, Salt, Lecithin (Sunflower And/Or Soy), Citric Acid, Cinnamon, Xanthan Gum, Baking Soda, Sucralose.
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils
Birthday Cake
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 B 4.4 20g 180 1g
Protein20gCalories180Sugar1gFiber12g
Ingredients: Protein Blend (Milk Protein Isolate, Whey Protein Isolate), Polydextrose (Prebiotic Fiber), Water, Erythritol, Almonds, Palm Kernel Oil, Glycerin, Sodium Caseinate, Natural Flavors. Contains Less Than 2% Of: Sea Salt, Gum Arabic, Spirulina Extract (Color), Red Cabbage Extract (Color), Turmeric Extract (Color), Radish Extract (Color), Sucralose, Lecithin (Sunflower And/Or Soy).
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Protein LeadsQuality Protein SourceArtificial SweetenersSugar AlcoholsProcessed Oils

Bottom line on Quest

Quest earns its reputation as a high-protein, low-sugar bar. Averaging 12g of fiber per bar is a genuine standout in any category, and every single flavor holds a B or A ingredient grade. No Quest flavor falls into mediocre territory, which is a consistency most brands cannot match across their full lineup.

The limitation is just as consistent: artificial sweeteners and sugar alcohols in every flavor, no exceptions. If those ingredients are a dealbreaker, Quest is not your bar regardless of which flavor you pick. If you are fine with sucralose and erythritol and you are prioritizing protein and fiber per calorie, Quest is one of the stronger options in our database. Start with Oatmeal Chocolate Chip, Chocolate Peanut Butter, or Double Chocolate Chunk. All three earn A grades and have noticeably shorter ingredient lists than the rest of the lineup.

Know Your Bar

Explore all 1,000+ bars

Filter by protein, sugar, fiber, calories, or specific ingredients. Every bar scored A–F by ingredient quality. No sponsored picks.

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Frequently asked questions about Quest bars

Quest bars score B or A on ingredient quality across all 16 flavors, with scores ranging from 4.4 to 9.3. They rank in the top 5% for fiber and top 27% for protein across 1,000+ bars we track. Every flavor contains artificial sweeteners (sucralose and stevia) and sugar alcohols (erythritol). Whether that matters depends on your dietary goals.
Oatmeal Chocolate Chip scores highest at 9.3 (A, Clean), followed by Chocolate Peanut Butter at 8.5 and Double Chocolate Chunk at 8.4. These three earn A grades because of shorter, simpler ingredient lists with fewer additives. The lowest scorer, Birthday Cake at 4.4, adds palm kernel oil and a longer list of stabilizers.
Yes. Every Quest bar contains sucralose, and most also include stevia. There are no exceptions across the lineup. Quest uses synthetic sweeteners to keep sugar very low without relying on sugar alcohols alone. For many people this is fine. For others it's a dealbreaker, and there is no Quest flavor that avoids it.
Quest bars contain 18 to 21g of protein per bar, averaging around 20g. That puts them in the top 27% for protein across all bars in our database. The protein source is a blend of milk protein isolate and whey protein isolate, both complete animal-based proteins with strong amino acid profiles.
Yes. Every Quest bar contains erythritol, typically 5 to 9g per bar. Erythritol is generally better tolerated than other sugar alcohols, but it can still cause bloating or digestive discomfort in some people, especially in larger amounts. It's what allows Quest to keep total sugar at just 1 to 2g.
Quest ranks in the top 5% for fiber and top 27% for protein across 1,000+ bars. Every flavor scores B or A, which is a strong and consistent showing. The main tradeoff versus cleaner alternatives like RXBAR or Barebells is sucralose in every flavor. Neither of those brands uses artificial sweeteners in their core bars.
Quest uses a blend of milk protein isolate and whey protein isolate. Both come from dairy, are complete proteins, and have strong amino acid profiles. This is one of the reasons Quest ingredient scores are as high as they are. Quality protein sources score well in our system, and Quest leads with them in every flavor.