Top 10 Low-Carb Diet Protein Bars

The best diet to reduce body fat and build lean body mass is a diet high in fat, moderate in protein, and low in carbohydrates. While fat (and, annoyingly, carbs) are all-too-easy to eat, it can sometimes be harder to hit protein goals for the day. Thankfully, some bright cookie invented protein bars – the perfect pre- or post-workout snack, and an excellent way to hit your macros.

There are a lot of protein bars on the market, but it can be hard to know which ones are the best (and which ones taste like recycled cardboard). In general, protein bars come in two varieties – high protein/low carb ones (they’re the ones we want), or otherwise full-on meal replacement bars – high in both protein AND carbs (we don’t want that).

The best protein bars are made with whey protein because it’s absorbed quickly into the body, making them particularly well suited to post-workout. In addition, they can provide a great source of fiber, which is sometimes hard to get on a low-carb diet. Just be careful of the artificial sweeteners in them – not because they’re mysteriously toxic, but because some of them actually ARE metabolized by the body, and can kick you out of ketosis (if that’s your goal).

Overall, a low-carb protein bar should give you energy, sustain your insulin levels, not contain a lot of the bad artificial sweeteners (erythritol is great, however), and taste delicious. Read on for ten of the best protein bars (by macro content).


  1. Quest Bar

Quest is the best protein bar manufacturer on the market, with great taste and the perfect balance of protein, carbohydrates and fiber. It’s gluten-free and does not contain trans. The nuts in the Quest Bar contain natural, healthy oils. The best part about the Quest Bar – it comes in many different flavors to satisfy your sweet tooth. Seriously, Quest bars are my savior – they give you a massive fiber boost, they’re low calorie (under 200 per bar), and super low carb. SO MANY FLAVORS!

  • 21 grams protein
  • 18 grams fiber
  • 3-6 grams net carbohydrates

  1. Muscle Pharm Combat Crunch Bar

Perhaps one of the best nutritional protein bars, Muscle Pharm’s Combat Crunch Bar helps enhance muscle growth and improves the digestive system. The gluten-free, layered, baked protein bar comes in flavors including Chocolate Chip, Chocolate Peanut Butter, White Chocolate Raspberry and more.

  • 20 grams protein
  • 12 grams fiber

  1. ISS Research Oh Yeah! Victory Bars

The Victory Oh Yeah! Bars are also gluten-free and contain no sugar alcohol. The bars are (relatively) low in sugar and contain healthy fats. Milk protein, calcium caseinate and whey provide a healthy snack that aides in the growth and quick recovery of the body’s muscles. It’s filling and gives you energy before your work out. It comes in a variety of tasty flavors including Chocolate Chip Cookie Dough, Fudge Brownie, Peanut Butter Cup and Vanilla Almond. My only problem with these are the fact that they’re a bit higher in carbs than you want on a keto diet.

  • 21 grams protein
  • 17 grams fiber
  • 11 grams net carbohydrates

  1. VPX Life Lift Protein Bar

Life Lift’s protein bar is also gluten-free, naturally flavored and has a 50/50 protein/fiber ratio. The ingredients of the Life Lift Bar are on par with Quest and ISS’s Victory bars. It will fill you up and give you energy as it helps you reduce your body fat and increase your muscle mass. It comes in a variety of flavors including Apple Cinnamon, Blueberry, Strawberry and Fudge Brownie. It contains protein crisps that provide it with texture and crunch.

  • 20 grams protein
  • 20 grams fiber
  • 6 grams carbohydrates


  1. Pure Protein High Protein Bar

This protein bar is low in fat, sugar and calories. It has a maximized protein to carb rate so it will help build lean muscle and improve muscle recovery after workouts. It comes in great tasting flavors including Dark Chocolate Coconut, Cranberry Almond Cashew, Tropical Fruit Macadamia, Banana, Mint, S’More, Vanilla and more. Really low in fiber though…not great.

  • 19 grams protein
  • 1 gram fiber
  • 3 grams carbohydrates

  1. Bionutritional Power Crunch Bar

Nutrient-packed as well as protein packed, Bionutritional’s Power Crunch Bar makes a great snack or meal replacement when on a low-carb, high protein diet. The tasty, crunchy wafers come in flavors including Vanilla Cream, Cookies and Cream and Peanut Butter Cream.

  • 14 grams protein
  • 8 grams carbohydrates

  1. Nu Go Smarte Carb Bars

The Nu Go bars are high in protein, low in carbohydrates and contain 15% of daily recommended calcium and 8% of daily recommended iron. Nu Go Smarte Carb Bars come in delicious Peanut Butter Crunch and Chocolate Black Cherry.

  • 20 grams protein (Peanut Butter), 16 grams protein (Chocolate Cherry)
  • 2 grams carbohydrates (Peanut Butter), 1 gram carbohydrate (Chocolate Cherry)

  1. Ideal Bar

Ideal Bar’s protein bar is ideal because it blocks food cravings, boosts energy and helps activate weight loss. These bars also contain 23 vitamins and minerals to enhance overall health. It comes in delicious Cookies and Cream, Cran-Granata, Lemon Poppyseed, Raspberry Jelly and Choco-Raspberry flavors. However, despite its somewhat more attractive nutrient profile, it IS a little high in carbs.

  • 15 grams protein
  • 5 grams fiber
  • 15 grams carbohydrates


  1. Isotari Eat Smart Bars

The great tasting protein bars help control hunger, increase muscle and speed up muscle recovery. Made with whey protein, the protein is absorbed quickly into the body to help fight body fat and build lean muscles. It is gluten free and contains no trans fats. It comes in great flavors like Chocolate Chip and Peanut Butter Caramel.

  • 15 grams protein
  • 3 grams fiber
  • 13 grams carbohydrates


  1. Oatmega

Oatmega is gluten-free, low sugar and mostly organic. The bars contain essential fatty acids and added fish oil without the taste. The protein bars taste good and come in flavors including White Chocolate Raspberry, Lemon Chia Crisp, Chocolate Coconut Crisp, Brownie Crisp, Chocolate Crisp, Vanilla Almond Crisp and more. Again, however, it’s rendered somewhat less than ideal by a high carb-count.

  • 14 grams protein
  • 7 grams fiber
  • 14 grams carbohydrates

When eating protein bars as quick energy snacks or as meal replacements, it is important to find the protein bars with the best combination of protein, fiber and carbohydrates. Hopefully the list here helps make your choice a bit easier, but I advise trying a good range of different bars – what one person loves may taste like gritty cardboard to another. Find the bars that you love! And of course, if you have any suggestions or if you feel I’ve unfairly excluded a bar, let me know in the comments below!

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