Quest Bar Protein Bar Review – The Best Low Carb Protein Bar?

Each Quest Bar protein bar provides you with 20g of protein, 22g of carbohydrates, 6g of fat, and 190 calories.

With 15g of dietary fiber per bar, they’re also one of the best low carb protein bars on the market, in terms of net carbs.

In this review, we’ll compare Quest Bars to two other top-rated protein bars; Optimum Nutrition Opti-Bars, and thinkThins.

Comparisons include the macro split (levels of protein, carbs, and fats), cost per serving, flavors, customer feedback, and total calories.

This is to guarantee you only buy the best protein bar for your current diet and fitness goal. Whether that’s weight loss, lean muscle gain, bulking, or simply to boost your daily protein intake.

Quest Protein Bar Ingredients

Quest Bar Protein Bar Ingredients

If you’re looking for a protein bar that’s high in protein but low in sugar, Quest Bars could be your best option.

When they were first blending together ingredients, the founders of Quest Bars were determined to keep the recipe low in sugar. Even with the wide range of flavors now available, it’s a principle that continues to this day.

Quest Bars are also low fat, with just 6g per bar. That’s compared to 9g per bar for Opti-Bars (Optimum Nutrition) and 15g of fat in your average KIND bar. This helps to keep the calories low, which is perfect if you want to lose weight or add lean muscle.

The protein blend of milk protein isolate and whey protein isolate also helps to maximize the amount of high quality protein you get in each bar.

Some companies bulk out their protein isolates with protein concentrates. Both types of protein digest at the same rate and supply your body with the same amount of aminos, but isolates are considered to have less lactose, which helps reduce bloating.

Quest Bar Nutrition Facts

Quest Bar Protein Bar Ingredients Label
Ingredient Amount per Serving % Daily Value
Calories 190
Total Fat 6 g 9%
Saturated Fat 2 g 10%
Cholesterol 5 mg 2%
Sodium 210 mg 9%
Potassium 105 mg 3%
Total Carbohydrates 22 g 7%
Dietary Fiber 15 g 60%
Sugars 2 g
Protein 21 g 42%
Quest Bar Protein Bars

Quest Bar Protein Bars – Summary

  • 21g Protein, 5g Net Carbs, 2g Sugars, 15g Dietary Fiber, 190 Calories, 6g Fat
  • No Added Sugar – Sweetened with Erythritol, Sucralose and Stevia
  • Protein blend of whey protein isolates and milk protein isolates
  • All Natural, Gluten and Soy Free
  • Includes 12 bars per box
  • Over 12,000 reviews on Amazon

Weight loss or weight gain?

Quest Bars are designed to assist with the support of lean muscle growth and recovery, as part of a regular exercise and nutrition program.

For weight gain, you’ll need to consume sufficient protein and enough calories from healthy foods to put your body in a daily caloric surplus.

So if you need more carbs and calories, MET-Rx Big 100 (30 g protein, 47 g carbs, 400 cals) or PowerBar Protein Plus bars (20 g protein, 30 g carbs, 270 cals) could be better options.

However, if your goal is weight loss or you’re looking for a cleaner source of carbs (lower sugar), it’s better to find a high protein, low calorie, low carb protein bar, which helps put your body in a caloric deficit each day.

Quest Protein Bars meet this criteria, containing just 6 g of fat, 20 g of protein and as few as 170 calories, depending on the flavor.

Who are they designed for?

Runners, weightlifters, athletes, or anyone looking for a quick and easy way to increase their protein intake.

When is the best time to take it?

The low net carb content of Quest Bars means they fit in well as part of a healthy breakfast, post-workout nutrition, or as mid-morning/mid-afternoon snacks.

As a general guide, whether you’re looking to diet or add lean muscle, carb intake should be drastically reduced after 5-7pm.

Quest Bar Protein Bar vs. Opti-Bars

Quest Bar Protein Bar
Protein: 21 g
Protein: 20 g
Carbohydrates: 22 g
Carbohydrates: 20 g
Fat: 6 g
Fat: 9 g
Dietary fiber: 15 g
Dietary fiber: 10 g
Calories: 190
Calories: 250
Bars per box: 12
Bars per box: 12
Bar weight: 60 g
Bar weight: 60 g
Protein density: 33%
Protein density: 33%
Cost per serving*: $2.00
Cost per serving*: $1.33

*Based on buying a box of 12 bars. Price accurate at time of writing.

Quest Bar Protein Bar vs. thinkThins

Quest Bar Protein Bar
Protein: 21 g
Protein: 20 g
Carbohydrates: 22 g
Carbohydrates: 25 g
Fat: 6 g
Fat: 8 g
Dietary fiber: 15 g
Dietary fiber: 2 g
Calories: 190
Calories: 230
Bars per box: 12
Bars per box: 10
Bar weight: 60 g
Bar weight: 60 g
Protein density: 33%
Protein density: 33%
Cost per serving*: $2.00
Cost per serving: $1.50

*Based on buying a box of 12 bars. Price accurate at time of writing.

Quest Bar Flavors

Quest protein bars are available as 60 g bars, supplied in a box of 12.

Quest protein bars are available in 17 flavors:

  • Chocolate Brownie
  • Chocolate Chip Cookie Dough
  • Chocolate Peanut Butter
  • Cinnamon Roll
  • Coconut Cashew
  • Oatmeal Chocolate Chip
  • Peanut Butter Supreme
  • Rocky Road
  • S’mores
  • Cookies & Cream
  • Double Chocolate Chunk
  • Maple Waffle
  • Mint Chocolate Chunk
  • Mocha Chocolate Chip
  • Vanilla Almond Crunch
  • White Chocolate Raspberry
  • Strawberry Cheesecake

Save money with Amazon

If you’re looking to save money on your monthly supplement order, you might want to consider the Amazon Subscribe & Save program.

Subscribe & Save allows you to unlock savings of up to 15% on a wide range of sports nutrition products, including Quest Nutrition Protein Bars (selected flavors only).

You can save 5% with a subscription to 1 product, or save the full 15% by subscribing to 5 products, provided they’re all delivered to the same address. The delivery schedule can be set from monthly, up to once every 6 months.

Although 5 products might sound a lot, if you already supplement with a protein powder, multivitamin, creatine, BCAA, and glutamine, the savings can soon add up. But it’s best to order before you run out of your current supplements, because Amazon set the day of the month each order is sent (same day each month e.g. 14th.).

Who are Quest Nutrition?

The original Quest Bars were first created in 2010, and released in just two flavors: Vanilla Almond Crunch and Peanut Butter Supreme.

Over the next two years, the Quest Nutrition team built custom-designed equipment to increase production of their healthy protein bars without compromising on quality.

By 2014, the product line has expanded beyond protein bars, and today includes their own line of Quest Protein Cookies, protein powders, Quest Hero Bars, chips, and even Quest Pizza.

The original protein bars have also established themselves as a worldwide bestseller, with over 12,000 reviews on Amazon alone.

Protein Bar Buying Guide

Review Overview

Overall Review Rating

5 / 5

So, are Quest Bar protein bars worth buying?

If you need more than 20g of protein per bar, you should be prepared for the increase in sugars and carbs. Few protein bars have more than this, and those that do, such as MET-Rx Big 100 (31g protein) also include a lot more sugary carbs (47g carbs, 32g sugar).

Quest Bars are some of the cleanest protein bars on the market. This is thanks to the low net carbs, created by the high level of fiber and virtually zero sugar.

In terms of price, they're not cheap. You'll generally be paying around $2.39 per bar for singles, or $2 per bar for a box of 12. That's compared to $1.50 for Optimum Nutrition Opti-Bars, or $1.47 for Pure Protein Bars, which have an almost identical macro split (20g protein, 24g carbs, 5g fat), but low fiber (2g).

Overall, we believe Quest Bars to be the best protein bars on the market today. This is based on their balance of high fiber, low sugar, low net carbs, and high protein, not to mention their extensive range of flavors.