keto friendly quest bars

Are Quest Bars Keto-Friendly?

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You’ve probably seen Quest products in grocery stores or gas stations. These snack bars are popular because they are marketed as healthy and keto-friendly.

Aside from their protein bars, Quest also makes chips, protein powders, pizza, and more.

But we often wonder if these products are truly guilt-free, or if it is just a marketing ploy. 

So, we ask, are Quest Bars keto-friendly?

We look at the ingredients and nutritional facts of Quest bars, and which Quest bars are keto-friendly.

What is a Quest Bar?

Quest is a popular health brand that is owned by the Simply Good Foods Company. 

The first Quest Protein Bar was created in Ron and Shannan Penna’s personal kitchen, which their friends and family loved. 

After building a small but dedicated fanbase, the brand became best-selling in specialty retailers until they reached grocery stores and developed more tasty snacks.

Quest currently offers three types of snack bars:

Compared to other candy bars in the sweets section of the store, all three Quest bars are relatively healthier and much lower in carbs.

Quest Bar Nutritional Facts

The nutritional information in these Quest products varies depending on the type and flavor. We won’t list them all but here is a bit of an average breakdown. 

The Quest Protein Bars have between 180 and 210 calories. The Hero Bars are between 150 and 200 calories per bar. The Snack Bars have 210 calories. 

Here’s a roundup of the nutrients in these Quest Bars. Keep in mind these will vary between flavors.


  • Protein bar: 8g
  • Snack Bar: 15g
  • Hero Bar: 11g

Fat is the cornerstone of the keto diet, so you want to load up on this macronutrient.

For a tiny snack bar, all Quest Bars are high in fats. Fortunately, these fats are saturated and not trans fats.

Saturated fats are a subject of a great deal of controversy. But remember that not all saturated fats are the same. 

And besides, saturated fats usually come from carb-heavy desserts, so this nutrient is not the only factor in your diet that may be causing harm,

When carb-heavy foods and other junk foods are represented in studies only by their fat content, it can be hard to tell their health effects. 

Always opt for healthy fat choices on the keto diet to avoid the risk of heart disease and obesity.


  • Protein Bar: 21g
  • Snack Bar: 10g
  • Hero Bar: 17g

Quest Protein Bars contain the highest amount of protein, just right for people living a highly active lifestyle and those looking to grow muscle and build strength.

Protein is an essential macronutrient that can promote muscle growth.

It’s also a great way to prevent age-related muscle loss, as well as improving strength and the appearance of your body.

The main protein sources for these protein bars are milk protein isolate and whey protein isolate. 

The snack bar also contains both ingredients as protein sources but in lower amounts. 

These are considered slightly better compared to other types of protein, such as casein or soy.

Whey protein isolate and milk protein isolates are a byproduct of cheese production, which are also found in protein powders.

If you are lactose intolerant, whey protein isolate is acceptable and has fewer effects on the stomach than whey protein concentrate. So, there’s no need to worry about having an upset stomach.


  • Protein Bar: 14g
  • Snack Bar: 7g
  • Hero Bar: 10g

We were surprised at the high amount of fiber in the Quest Protein and Hero Bars. 

This nutrient is usually lacking among keto dieters as they restrict many carbs that are a good source of fiber.

Fiber cannot be broken down into sugar molecules, unlike other carbs. It simply passes through the body, keeps hunger and blood sugar in check, then leaves.

One of the many health benefits of fiber is its ability to improve your gut health. Aside from relieving constipation, this nutrient can encourage a healthy gut microbiota.

According to a 2015 review, fiber can increase the bulk of your poop and promote regular bowel movements, reducing the time that waste spends inside the intestines.   

It also reduces the risk of diabetes as your body slows down the absorption of sugar and prevents blood sugar spikes after meals.

If you lack fiber on the keto diet, eat more crunchy veggies and take fiber supplements to compensate!

Carbs and Sugar

Here’s how many net carbs the Quest bars contain:

  • Protein Bars: 4g net carbs
  • Snack Bar: 5g net carbs
  • Hero Bar: 3g net carbs

These are the average number of net carbs, as each flavor varies in the amount of sweetener used.

Net carbs are computed by subtracting sugar alcohols and fiber from the total carbs. 

For example, Quest’s Hero Protein Bar Chocolate Peanut Butter has 3g net carbs. That’s 18g of total carbs minus 4g fiber minus 4g allulose and 5g erythritol.

However, because our bodies differ from one another, sugar alcohols may or may not be processed. 

On the keto diet net carbs serve as a guide on what you can or cannot eat with a daily limit of less than 50g of carbs when you first start out.

What we appreciate about Quest Bars is their use of keto-friendly sweeteners like allulose, erythritol, and stevia.

These sweeteners are the most recommended, although the products also contain small amounts of sucralose.

Low-carb sweeteners are added to foods to mimic or replace items that the keto eliminates. 

Remember that these sweeteners may lure you into eating even when you’re not hungry!

Which Quest Bars are Keto-Friendly?

Quest Products are marketed as keto-friendly. They even have a description of what “keto-friendly” means on their website.

For them, a keto-friendly product needs to have less than 4g of sugar and less than 20g of sugar alcohols. 

All these Quest Bars are considered low-carb and keto-friendly.

Aside from containing only around 4g of net carbs, these snacks use the best keto sweeteners like stevia and erythritol.

However, you must beware that eating sweet-tasting foods and drinks like Quest Bars can promote your craving for more sweet-tasting foods.

But they’re not entirely keto-friendly because Quest Bars do not contain many vitamins and minerals, so you can’t consume them as meal replacements.

Another debatable ingredient in some Quest Bars is Carrageenan, a food additive that keeps your digestive system from working properly. 

The fats in Quest Bars may be bad-quality fats. Instead of MCT oil or coconut oil for a healthy increase in ketone production, the products contain palm oil.

Sweeteners Used in Quest Bars

As mentioned, stevia, erythritol, and monk fruit are the main sweeteners in Quest Bars, which we applaud for being keto-friendly.

However, some of the products contain honey, a source of sugar that should be avoided on a low-carb diet. 

Sucralose is another sweetener found in these bars that is not recommended on keto.

Dried berries can also be found in some flavors.

This does not necessarily mean that Quest Bars will kick you out of ketosis. 

If you don’t mind ingesting small amounts of these sweet components, then it’s okay to eat Quest Bars on occasion.

Quest Protein Bars are one of the most popular fast energy snacks that provide you with a protein source right away. 

Some of the Hero Bars have fewer calories, nutrients, and carbs. If you want something that is light on the stomach, or if you’re not looking to get active throughout the day, this may be your best choice.

The Most Low-Carb Quest Product

The most keto-friendly Quest Product you can try is the Quest MCT Oil Powder.

MCT oil is a true keto staple that provides high-quality fats to support your ketosis.

Add this to your coffee to make it bulletproof or mix it with your favorite low-carb shake recipe. 

This MCT oil powder has 7g of fat, 0g protein, and 0g of net carbs, so it’s not an MCT oil protein powder. 

It’s simply MCT oil in powder form for those who dislike adding liquid oil to their drinks.  

The Most Keto-Friendly Quest Product

While Quest MCT Oil Powder has zero carbs, the nutrients are still inadequate.

We consider Quest Protein Cookies the most keto-friendly because of the commendable macro ratio, which is even better than Quest Hero and Protein Bars.

Quest Protein Cookies are incredibly high in fat at 13-17g per serving. They also have 15-16g of protein and only 4-5g of net carbs.

It is the epitome of the perfect keto macro ratio!

FAQ Keto Diet and Quest Snacks

How Many Quest Bars Can I Have on Keto?

While two or three Quest Bars won’t kick you out of ketosis, we only recommend eating one.

Quest Bars contain low-carb sweeteners that do not activate the rewarding effects in your brain, so you may tend to crave more high carb foods after eating them.

You shouldn’t be eating these processed snacks every day. Quest Bars are not meant to replace high-quality and low-carb whole foods.  

Find out how many carbs will kick you out of ketosis to adjust your diet and control your cravings! 

Do Quest Bars Help with Weight Loss?


Quest Bars may help you lose weight loss if you don’t eat too many. To lose weight on the keto diet, your body produces ketones for fuel instead of using carbs.

To achieve this ketogenic state, you need to lower your carb intake. These low-carb snacks can help.

You also want to eat fewer calories than the amount you burn. Whatever diet you are on you still need to acknowledge that calorie intake matters.

Which Snacks are Good for Keto?

Quest Bars are among the best snacks you can have as they are low-carb and high-fat. They also have a moderate to high amount of protein, just enough to suit your daily macro intake.

But there are other yummy and ketogenic-friendly snacks you can have. Sweet, savory, and spicy options exist for your cravings.

Check out our top keto-friendly snack options now! 

Indulge in Quest Bars to Satisfy Your Cravings!

It can be hard to tell whether a food is keto-friendly or not because of the many considerations. 

Aside from being low-carb and sugar-free, it must have a high amount of healthy fats and just enough fiber and protein.

And just because it contains low-carb sweeteners like sucralose doesn’t mean it’s keto-friendly. Your food should use stevia, erythritol, or monk fruit to satisfy your sweet tooth.

Or you can make your own keto desserts! Making your food will help you keep accountability for the food you eat on keto. 

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