If you purchase an independently reviewed product or service through a link on our website, we may receive an affiliate commission.

  • It’s the perfect time to stock up on Amazon’s best-selling protein bars because they are all back in stock right now for the first time in quite a while.
  • Delicious Quest Nutrition Birthday Cake Protein Bars top the list right now as the #1 best-seller, as has been the case for months.
  • Several other popular options are available as well, including RXBARs and Pure Protein Bar variety packs.

Anyone who has been following the BGR Deals team’s coverage for a while knows that there is one protein bar that we recommend above and beyond all others. That’s right, we’re talking about the Quest Hero bar, which is sweetened with allulose instead of regular sugar. It tastes exactly like sugar but the body doesn’t metabolize it the same way, so you don’t have to worry about all the calories and other problems associated with sugar. These delicious bars are back in stock right now after having been sold out for nearly a month, so it’s a great time to give them a try.

Now, despite how delicious they are, Hero bars actually aren’t among the best-selling protein bars on Amazon. Anyone who has ever tried one will be shocked to find that out, but there are other bars out there with just as much protein that are almost as delicious. Quest Nutrition Birthday Cake Protein Bars are at the top of the list right now, as they have been for a long time. RXBARs and Pure Protein Bar variety packs are also top-sellers.

Because of the novel coronavirus pandemic, we’re all cooped up in our homes far more than usual and we might not be getting as much nutrition as we should. Or, if you plan to exercise at home — and you definitely should — you’re obviously not going to be able to grab a protein bar or a shake on your way out of the gym. With that in mind, we dug through Amazon to find the five best-selling protein bars on the entire site, and you’ll find them all listed in order down below.

Quest Nutrition Birthday Cake Protein Bars (12 pack)

  • EVERY DAY CAN BE YOUR SPECIAL DAY: The Quest Birthday Cake Protein Bar tastes like a slice of birthday cake you can enjoy every day. Celebrate with 21g protein 4g net carbs and less than 1g of sugar per bar.
  • CELEBRATE COMPLETE PROTEINS: Quest Birthday Cake Protein Bars are made with complete, dairy-based proteins to provide your body with 9 essential amino acids.
  • FIBER IS YOUR FRIEND: Each Quest Birthday Cake Protein Bar has 14g of fiber to provide your body with a more complete macro profile.
  • SWEET WITHOUT ADDED SUGAR: Enjoy the rewarding taste without worrying about added sugars. The Quest Birthday Cake Protein Bar has no added sugars.
  • TREATS THAT TRAVEL WITH YOU: Drop a Quest Birthday Cake Protein Bar with you in your backpack, purse, car console, cup holder, gym bag, or wherever your adventures take you.

Quest Nutrition Birthday Cake - High Protein, Low Carb, Gluten Free, Keto Friendly, 12 Count List Price:$29.99 Price:$25.99 You Save:$4.00 (13%) Available from Amazon, BGR may receive a commission Buy Now

RXBAR, Banana Chocolate Walnut, Protein Bar (12 pack)

  • Contains 12 RXBARs
  • ANYTIME HIGH PROTEIN SNACK: It’s always the perfect time for a wholesome snack. That’s why we suggest trying this real food protein bar for breakfast time, lunchtime, or as a pre or post-workout snack. Eat the whole snack bar or save some for later.
  • GLUTEN-FREE AND GUILT-FREE SNACK: Paleo, check. Whole30, check. Guilt and gluten-free, double-check. RXBARs are the perfect protein bar for any healthy lifestyle. Check out RX Nut Butter for a keto snack option.
  • On-the-Go Protein-Packed Fuel: RXBARs Are Great for the Office, On-the-Go Snacks, or Just a Wholesome Treat. Grab One Bar for a Protein-Packed Pre or Post Workout Snack and Get the Energy You Need.
  • WE’RE THE BAR THAT RAISED THE PROTEIN BAR, BAR: At RXBAR, we make protein bars. Simple real food ingredients, no gluten, no added sugar, and no B.S.

RXBAR, Banana Chocolate Walnut, Protein Bar, 1.83 Ounce (Pack of 12), High Protein Snack, Glute… List Price:$19.44 Price:$15.44 You Save:$4.00 (21%) Available from Amazon, BGR may receive a commission Buy Now

Pure Protein Bars, Variety Pack (18 pack)

  • You will receive (18) Pure Protein Bars, Chocolate Variety Pack, 1.76oz
  • A DELICIOUS HIGH PROTEIN BAR: Pure Protein Bars are the perfect combination of high protein, with less than 3g of sugar and great taste. This delicious Chocolate Variety Pack bar has up to 21g of protein for quick and sustained energy, and it is gluten free.
  • ON-THE-GO PROTEIN SNACK: Pure Protein Bars fuel your on-the-go active lifestyle. This protein bar is packed with a high quality protein blend for both quick and sustained energy, and full of flavor to satisfy your sweet tooth one bite at a time. Fuel your workout and nutritious balanced diet.
  • PRE- AND POST-WORKOUT FUEL: Pure Protein Bars are perfect for before or after a workout. Grab a protein bar about an hour before a workout to provide carbs and protein for energy and lean muscle support. Treat yourself after your workout to replenish energy and help the muscle recovery process.
  • COMPARE PURE PROTEIN BARS: Quest, Premier Protein, Oh Yeah! One, Clif Builders, Power Crunch, RX Bar, BSN Protein, Gatorade, Kellogg’s, ThinkThink, KIND, Lupii, Nature Valley, Fitcrunch, Powerbar, Atkins, Orgain, One Protein bar, MusclePharm, Oatmega, MuscleTech, Optimum Nutrition
  • Made in the USA

Pure Protein Bars, High Protein, Nutritious Snacks to Support Energy, Low Sugar, Gluten Free, V… Price:$16.28 Available from Amazon, BGR may receive a commission Buy Now

ONE Protein Bars, Blueberry Cobbler (12 pack)

  • THE ONE PROTEIN BAR: Congratulations, You’ve Found the ONE. Protein bar, that is. Our Blueberry Cobbler Protein Bar isn’t your grannie’s cobbler. Gluten-Free, with 20g of protein and just 1g of sugar, this is blueberry decadence for anytime, anywhere.
  • GLUTEN-FREE PROTEIN BARS: There’s nothing to feel guilty about in these Gluten-Free protein bars, so you can always give into your cravings. Stressful day? Pre-workout snack? Late for work? Grab your ONE protein bar for guilt-free snacking.
  • HIGH PROTEIN, JUST 1G SUGAR, NO REGRETS: Whichever ONE bar flavor you grab, from Salted Caramel to Peanut Butter Chocolate Cake, you’ll be getting 20g of protein, 1g of sugar and zero regrets. Our gluten-free bars are a perfect guilt-free snack when your energy is low.
  • TOO GOOD TO BE TRUE SNACKING: At ONE, we believe that great taste and good health are not mutually exclusive, which is why we created the ONE Protein Bar. High protein, just 1 gram of sugar and highly indulgent flavor make this protein bar the one you’ll keep eating.
  • ONE PROTEIN BAR IS THE ONE: You won’t be disappointed when comparing our bars to bars by brands like Gatorade, Pure Protein, Clif Bar, RXBAR, Quest Bar, Think Thin, Optimum Nutrition, Power Crunch, MusclePharm, Premier Protein, Kind, Lara Bar & PowerBar.

ONE Protein Bars, Blueberry Cobbler, Gluten Free Protein Bars with 20g Protein and only 1g Suga… List Price:$24.99 Price:$23.04 You Save:$1.95 (8%) Available from Amazon, BGR may receive a commission Buy Now

Pure Protein Bars, Birthday Cake (12 pack)

  • You will receive (12) Pure Protein Bars, Birthday Cake, 1.76oz
  • A DELICIOUS HIGH PROTEIN BAR: Pure Protein Bars are the perfect combination of high protein, only 3g of sugar and great taste. This delicious Birthday Cake bar has 20g of protein for quick and sustained energy, and it is gluten free
  • ON-THE-GO PROTEIN SNACK: Pure Protein Bars fuel your on-the-go active lifestyle. This protein bar is packed with a high quality protein blend for both quick and sustained energy, and full of flavor to satisfy your sweet tooth one bite at a time. Fuel your workout and nutritious balanced diet
  • PRE- AND POST-WORKOUT FUEL: Pure Protein Bars are perfect for before or after a workout. Grab a protein bar about an hour before a workout to provide carbs and protein for energy and lean muscle support. Treat yourself after your workout to replenish energy and help the muscle recovery process
  • COMPARE PURE PROTEIN BARS: Quest, Premier Protein, Oh Yeah! One, Clif Builders, Power Crunch, RX Bar, BSN Protein, Gatorade, Kellogg’s, ThinkThink, KIND, Lupii, Nature Valley, Fitcrunch, Powerbar, Atkins, Orgain, One Protein bar, MusclePharm, Oatmega, MuscleTech, Optimum Nutrition
  • Made in the USA

Pure Protein Bars, High Protein, Nutritious Snacks to Support Energy, Low Sugar, Gluten Free, B… List Price:$13.90 Price:$13.49 You Save:$1.54 (11%) Available from Amazon, BGR may receive a commission Buy Now


Follow @BGRDeals on Twitter to keep up with the latest and greatest deals we find around the web. Prices subject to change without notice and any coupons mentioned above may be available in limited supply.