Best picks
Ten protein bars ranked by third-party certification, protein per calorie, sugar and sugar alcohols, and price per bar, with maker labels and FDA recall checks as of October 7, 2026.
Fact-checked against FDA labels and official sources; not yet reviewed by a licensed clinician. This page is education, not medical advice. Talk to your doctor before starting, stopping or changing any treatment.
Key takeaways
- NSF Certified for Sport checks that a product has none of 290 banned substances, matches its label and has no unsafe levels of contaminants; the Herbalife24 Achieve bar was the only pick listed.[2]
- By maker labels, David has the most protein per calorie (28 g in 150 kcal, 18.7 g per 100 kcal); most other bars land between 7.6 and 11.7 g.[4]
- Sorbitol, mannitol and maltitol can cause gas or loose stools in people who are not used to them; erythritol normally avoids these effects.[15]
- Higher-protein diets of about 1.2 to 1.6 g per kg a day improved appetite and weight management in research.[22]
In short: Our top three are the Herbalife24 Achieve Protein Bar, the only bar here listed in NSF’s Certified for Sport registry and best for anyone who wants a third-party checked label; the David Protein Bar, with the most protein per calorie by far (28 g in 150 calories), best for people stretching a tight calorie budget; and the Pure Protein Bar, with 21 g of protein in 180 calories at the lowest price per bar, best for an everyday snack. All ten have at least 15 g of protein in 250 calories or less.
A protein bar is a snack, not a meal: our guide to healthy snacks shows where one fits in a day, and if you’d rather drink your protein, see the best protein powders. We research; we don’t test. Every number below is maker-stated, copied from the maker’s own nutrition label on October 7, 2026, with the maker’s list price that day. We also searched FDA recalls and warning letters for every brand. Nothing here is sold by InstaTuck, and the order never depends on commissions.
The 10 best protein bars, ranked
10 protein bars, ranked by certification, protein per calorie and sugar
1. Herbalife24 Achieve Protein Bar (Chocolate Chip Cookie Dough)
Best for A third-party certified label
- 20 g protein, 240 kcal per 58 g bar (8.3 g per 100 kcal)
- 3 g sugar (2 g added), 5 g sugar alcohol
- NSF Certified for Sport
Maker-stated specs
Price $30 for 6 bars (about $5.00 each) (checked Oct 7, 2026)
Drawback Highest price per bar here; the US page links a California Prop 65 notice about lead
2. David Protein Bar (Chocolate Chip Cookie Dough)
Best for The most protein for the fewest calories
- 28 g protein, 150 kcal per 62 g bar (18.7 g per 100 kcal)
- 0 g sugar, 7 g sugar alcohol
- milk protein, collagen, whey and egg white
Maker-stated specs
Price $39 for 12 bars (about $3.25 each) (checked Oct 7, 2026)
Drawback A 2026 class action alleges more calories and fat than the label states; David disputes it
3. Pure Protein Bar (Chocolate Deluxe)
Best for The lowest price per bar
- 21 g protein, 180 kcal per 50 g bar (11.7 g per 100 kcal)
- 3 g sugar (2 g added), 4 g sugar alcohol (maltitol)
- gluten-free
Maker-stated specs
Price $7.99 for 4 to $21.49 for 12 (about $1.79 to $2.00 each) (checked Oct 7, 2026)
Drawback Contains maltitol, the sugar alcohol most likely to upset some stomachs
4. Built Puff (Strawberry Cheesecake)
Best for A light, marshmallow-style bar with no sugar alcohols
- 17 g protein, 150 kcal per 40 g bar (11.3 g per 100 kcal)
- 7 g sugar (6 g added), 0 g sugar alcohol
- collagen and whey protein
Maker-stated specs
Price $10.99 for 4 to $29.99 for 12 (about $2.50 to $2.75 each) (checked Oct 7, 2026)
Drawback The most added sugar on this list and no fiber
5. Quest Protein Bar (Chocolate Chip Cookie Dough)
Best for High fiber, sweetened with erythritol rather than maltitol
- 21 g protein, 200 kcal per 60 g bar (10.5 g per 100 kcal)
- 1 g sugar (0 g added), 3 g erythritol
- 14 g fiber
Maker-stated specs
Price $12.49 for 4 to $99.97 for 36 (about $2.78 to $3.12 each) (checked Oct 7, 2026)
Drawback 14 g of added fiber can cause gas if you are not used to it
6. No Cow Protein Bar (Chocolate Chip Cookie Dough)
Best for Dairy-free, plant protein
- 20 g protein, 200 kcal per 60 g bar (10.0 g per 100 kcal)
- 1 g sugar (0 g added), 7 g sugar alcohol
- 16 g fiber
- brown rice and pea protein
Maker-stated specs
Price $32.99 for 12 (about $2.75 each) (checked Oct 7, 2026)
Drawback High fiber plus sugar alcohol: start with half a bar if you have a sensitive stomach
7. Promix Protein Puff Bar (Chocolate Chip)
Best for A short, sugar-alcohol-free snack
- 15 g protein, 150 kcal per 40 g bar (10.0 g per 100 kcal)
- 5 g sugar (4 g added), 0 g sugar alcohol
- 5 g fiber
Maker-stated specs
Price $39 for 12 to $70 for 24 (about $2.92 to $3.25 each) (checked Oct 7, 2026)
Drawback The least protein per bar on this list
8. Barebells Protein Bar (Brownie Batter)
Best for A candy-bar texture with no added sugar
- 20 g protein, 210 kcal per 55 g bar (9.5 g per 100 kcal)
- 1 g sugar (0 g added), 6 g sugar alcohol (maltitol)
Maker-stated specs
Price $30.99 for 12 to $167.40 for 72 (about $2.33 to $2.58 each) (checked Oct 7, 2026)
Drawback Label warns that eating too much may have a laxative effect (maltitol)
9. think! High Protein Bar (Chocolate Fudge)
Best for A gluten-free bar at a lower price
- 20 g protein, 230 kcal per 60 g bar (8.7 g per 100 kcal)
- 1 g sugar (0 g added), 11 g sugar alcohol (maltitol syrup)
Maker-stated specs
Price $23.99 for 10 to $134.94 for 60 (about $2.25 to $2.40 each) (checked Oct 7, 2026)
Drawback The most sugar alcohol on this list; the box says "not a low calorie food"
10. FITCRUNCH Snack Size Bar (Chocolate Chip Cookie Dough)
Best for A layered, baked-bar treat
- 16 g protein, 210 kcal per 46 g bar (7.6 g per 100 kcal)
- 3 g sugar (2 g added), 8 g sugar alcohols
- gluten-free
Maker-stated specs
Price $25.99 for 9 to $44.99 for 18 (about $2.50 to $2.89 each) (checked Oct 7, 2026)
Drawback 8 g saturated fat (40% of the Daily Value), the most on this list
All 10 bars side by side
| # | Pick | Best for | Key specs (maker-stated) | Price range | Last checked |
|---|---|---|---|---|---|
| 1 | Herbalife24 Achieve Protein Bar (Chocolate Chip Cookie Dough) | A third-party certified label | 20 g protein, 240 kcal per 58 g bar (8.3 g per 100 kcal); 3 g sugar (2 g added), 5 g sugar alcohol; NSF Certified for Sport | $30 for 6 bars (about $5.00 each) | Oct 7, 2026 |
| 2 | David Protein Bar (Chocolate Chip Cookie Dough) | The most protein for the fewest calories | 28 g protein, 150 kcal per 62 g bar (18.7 g per 100 kcal); 0 g sugar, 7 g sugar alcohol; milk protein, collagen, whey and egg white | $39 for 12 bars (about $3.25 each) | Oct 7, 2026 |
| 3 | Pure Protein Bar (Chocolate Deluxe) | The lowest price per bar | 21 g protein, 180 kcal per 50 g bar (11.7 g per 100 kcal); 3 g sugar (2 g added), 4 g sugar alcohol (maltitol); gluten-free | $7.99 for 4 to $21.49 for 12 (about $1.79 to $2.00 each) | Oct 7, 2026 |
| 4 | Built Puff (Strawberry Cheesecake) | A light, marshmallow-style bar with no sugar alcohols | 17 g protein, 150 kcal per 40 g bar (11.3 g per 100 kcal); 7 g sugar (6 g added), 0 g sugar alcohol; collagen and whey protein | $10.99 for 4 to $29.99 for 12 (about $2.50 to $2.75 each) | Oct 7, 2026 |
| 5 | Quest Protein Bar (Chocolate Chip Cookie Dough) | High fiber, sweetened with erythritol rather than maltitol | 21 g protein, 200 kcal per 60 g bar (10.5 g per 100 kcal); 1 g sugar (0 g added), 3 g erythritol; 14 g fiber | $12.49 for 4 to $99.97 for 36 (about $2.78 to $3.12 each) | Oct 7, 2026 |
| 6 | No Cow Protein Bar (Chocolate Chip Cookie Dough) | Dairy-free, plant protein | 20 g protein, 200 kcal per 60 g bar (10.0 g per 100 kcal); 1 g sugar (0 g added), 7 g sugar alcohol; 16 g fiber; brown rice and pea protein | $32.99 for 12 (about $2.75 each) | Oct 7, 2026 |
| 7 | Promix Protein Puff Bar (Chocolate Chip) | A short, sugar-alcohol-free snack | 15 g protein, 150 kcal per 40 g bar (10.0 g per 100 kcal); 5 g sugar (4 g added), 0 g sugar alcohol; 5 g fiber | $39 for 12 to $70 for 24 (about $2.92 to $3.25 each) | Oct 7, 2026 |
| 8 | Barebells Protein Bar (Brownie Batter) | A candy-bar texture with no added sugar | 20 g protein, 210 kcal per 55 g bar (9.5 g per 100 kcal); 1 g sugar (0 g added), 6 g sugar alcohol (maltitol) | $30.99 for 12 to $167.40 for 72 (about $2.33 to $2.58 each) | Oct 7, 2026 |
| 9 | think! High Protein Bar (Chocolate Fudge) | A gluten-free bar at a lower price | 20 g protein, 230 kcal per 60 g bar (8.7 g per 100 kcal); 1 g sugar (0 g added), 11 g sugar alcohol (maltitol syrup) | $23.99 for 10 to $134.94 for 60 (about $2.25 to $2.40 each) | Oct 7, 2026 |
| 10 | FITCRUNCH Snack Size Bar (Chocolate Chip Cookie Dough) | A layered, baked-bar treat | 16 g protein, 210 kcal per 46 g bar (7.6 g per 100 kcal); 3 g sugar (2 g added), 8 g sugar alcohols; gluten-free | $25.99 for 9 to $44.99 for 18 (about $2.50 to $2.89 each) | Oct 7, 2026 |
Why this order
We used the same order for every protein product on InstaTuck. First, third-party certification: we searched NSF’s Certified for Sport registry for every brand, and the Herbalife24 Achieve bar was the only one on our list that appeared. NSF’s mark means the product contains none of 290 substances banned in sport, that its contents match its label, that it has no unsafe levels of contaminants, and that it’s made in an audited GMP facility. That is why it ranks first even though other bars beat it on protein per calorie.
The other nine are ranked by grams of protein per 100 calories, worked out from each maker’s label, because more protein for fewer calories fits a calorie deficit best. No Cow and Promix tied at 10.0 g, so the next rule, sugar and added ingredients, decided it: No Cow has 1 g of sugar and none added, while Promix has 4 g added. Price per bar was the last tiebreak and wasn’t needed. To be on the list at all, a bar needed at least 15 g of protein and no more than 250 calories, so it works as a snack rather than a small meal.
Sugar, added sugar and sugar alcohols
Most high-protein bars keep sugar low by swapping in sugar alcohols such as maltitol, sorbitol or erythritol. On the Nutrition Facts label, sugar alcohols are a separate, optional line; FDA rules require it only when the label makes a claim about sugar or sugar alcohols. That is why bars that say “1 g sugar” can still carry 6 to 11 g of sugar alcohol. Eight of our ten list it (Quest names it as erythritol); Built Puff and Promix use sugar instead and have none.
| Item | Total sugars | Added sugars | Sugar alcohols |
|---|---|---|---|
| Herbalife24 Achieve | 3 g | 2 g | 5 g |
| David | 0 g | 0 g | 7 g |
| Pure Protein | 3 g | 2 g | 4 g |
| Built Puff | 7 g | 6 g | 0 g |
| Quest | 1 g | 0 g | 3 g |
| No Cow | 1 g | 0 g | 7 g |
| Promix Puff | 5 g | 4 g | 0 g |
| Barebells | 1 g | 0 g | 6 g |
| think! High Protein | 1 g | 0 g | 11 g |
| FITCRUNCH Snack Size | 3 g | 2 g | 8 g |
Quest lists erythritol (3 g) by name. Added sugars are part of total sugars.
Source: Maker nutrition labels on each maker's site (checked on October 7, 2026)
Sugar alcohols are not all alike. A scientific review of their effects on the gut found that sorbitol, mannitol and the larger polyols such as maltitol can cause gas, bloating or loose stools, at least in people who aren’t used to them, while erythritol, a smaller molecule, normally avoids these effects. Tolerance varies from person to person and can improve with regular use. FDA requires foods likely to supply 50 g of sorbitol a day to say “Excess consumption may have a laxative effect,” and Barebells prints a similar warning about maltitol on its own label.
What a bar costs
| Item | Low | High |
|---|---|---|
| Pure Protein | $1.79 | $2 |
| think! High Protein | $2.25 | $2.40 |
| Barebells | $2.33 | $2.58 |
| Built Puff | $2.50 | $2.75 |
| FITCRUNCH Snack Size | $2.50 | $2.89 |
| No Cow | $2.75 | $2.75 |
| Quest | $2.78 | $3.12 |
| Promix Puff | $2.92 | $3.25 |
| David | $3.25 | $3.25 |
| Herbalife24 Achieve | $5 | $5 |
Low end = the biggest box or bundle; high end = the smallest box. Store and subscription prices may be lower.
Source: Maker list prices (one-time purchase, no subscription discount) (checked on October 7, 2026)
At list price, a protein bar costs about $1.80 to $3.25, with Herbalife’s distributor-sold bar at $5.00. If you want protein you can mix into food or drinks instead, compare the prices on our protein powder list. Bars win on convenience: no shaker, no fridge.
How much protein you need while losing weight
Protein and weight loss
- 1.2 to 1.6 g/kgprotein per kg of body weight a day in higher-protein diets that improved appetite and weight managementLeidy et al., AJCN 2015
- 25 to 30 gprotein per meal suggested in the same reviewLeidy et al., AJCN 2015
- +0.43 kglean mass kept with higher-protein vs standard-protein diets at the same calories (24 trials)Wycherley et al., AJCN 2012
Checked on October 7, 2026
Higher-protein diets help you feel full and keep more muscle while you lose fat. In a meta-analysis of 24 trials, people eating more protein at the same calories lost 0.79 kg more weight and 0.87 kg more fat, and kept 0.43 kg more lean mass. A 15 to 28 g bar covers a good part of one meal’s worth. Our protein calculator estimates your daily target, and the macro calculator splits your calories into protein, carbs and fat. Pairing protein with strength training is the core of body recomposition, and our high-protein diet guide explains the whole approach.
How to choose a protein bar
Read the label in four steps
- Divide protein by calories10 g or more per 100 calories is strong for a bar; 7 to 9 g is typical of candy-style bars.
- Check the sugar linesLook at added sugars and the Sugar Alcohol line, not just "total sugars".
- Scan the ingredientsMaltitol and sorbitol upset some stomachs; collagen counts toward protein; note allergens.
- Work out the price per barDivide the box price by the count; bigger boxes usually cost less per bar.
- Look for a third-party mark, then check it. If a bar claims NSF Certified for Sport, search the product and flavor in NSF’s public registry. “Third-party tested” without a named program (David says Light Labs tests its bars) is a weaker promise than a listed certification.
- Match the bar to the moment. A 150-calorie bar suits a between-meal snack. A 200 to 240-calorie bar is closer to a small meal; count it as one.
- Mind the fat line. Chocolate coatings add saturated fat: FITCRUNCH has 8 g, Built Puff 2.5 g, David 1.5 g.
- Check allergens. Most bars here contain milk; several contain soy, almonds, peanuts or egg. No Cow is dairy-free but contains almonds.
- Learn label tricks. Our guide to reading a supplement label covers serving sizes and front-of-pack claims.
Safety checks: recalls, warning letters and label questions
We searched FDA’s recall and warning-letter records for all ten brands on October 7, 2026. We found no FDA warning letters and no recalls of the bars on this list. We did find three older recalls of other products from these brands, all closed: Built Brands recalled one lot of its Banana Cream Pie Puffs (4,196 bars sent to about 1,049 mail-order customers) for possible E. coli in June 2022, with refunds or replacements and no illnesses reported; Herbalife recalled its Protein Bar (Peanut Butter) in May 2017 for an undeclared fish allergen, with no illnesses reported; and think! recalled certain lots of a protein oatmeal, not a bar, in January 2021 for undeclared tree nuts.
David’s bars face a different kind of question. A class action in federal court in New York (Southern District), reported in March 2026, alleges that lab tests found up to 83% more calories and 400% more fat than the label states, mainly over how a fat substitute called EPG is counted. David says the bar has 150 calories and that standard lab methods overstate calories from ingredients the body doesn’t fully absorb. FDA rules treat a food as misbranded if its calories are more than 20% above the label. A court has not ruled on the claims, so we kept the bar on the list with this note on its card.
What we left out, and why
- Gatorade Recover Protein Bar: NSF-listed, but at 340 to 360 calories per 80 g bar it is a recovery bar for athletes, not a snack for a calorie deficit.
- Purist High-Protein Bar: NSF-listed, but both flavors were sold out on the maker’s site on the day we checked.
- Other NSF-listed bars (Vital Performance, Ready Clean, RELLO): we could not find them for sale on the makers’ own sites, or read their current labels and prices there.
- ONE, RXBAR, KIND Protein, Premier Protein, Misfits, Mission1 and Garden of Life: the makers’ sites blocked our checks or didn’t show a readable US label and price, so we couldn’t confirm the numbers today.
- Grenade: its maker store sells in pounds sterling; we list only bars with a US maker price.
- Legendary Foods: high-protein pastries and donuts rather than bars.
What a protein bar can’t do
A protein bar doesn’t burn fat or boost metabolism. It helps only when it replaces a less filling snack, and it adds calories when it is eaten on top of everything else. Many bars are closer to a candy bar with extra protein than to whole food, so most of your protein is still best from meals: see our high-protein breakfasts and the most filling foods. If you want a bar to stand in for a whole meal, a meal-replacement shake is built for that job, with more calories, fiber and vitamins. For the bigger picture, start at the nutrition hub.
Sources and last checked
We read every label and price on the maker’s own website and searched NSF’s Certified for Sport registry and FDA’s recall and warning-letter records on October 7, 2026. Labels change with new recipes, so check the box you buy. We’ll recheck prices, stock and recalls every three months. The numbered references below list every source; our method is explained in full on how we choose our picks.
Records in this article
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- How much protein should I aim for each day, given my kidneys and health?
- Is a protein bar a good snack for me, or would whole food work better?
- Which sweeteners or sugar alcohols should I avoid with my digestion?
- How should I count protein bars in my calorie and carb targets if I have diabetes?
Frequently asked questions
What is the best protein bar for weight loss?
Look for at least 15 g of protein in 250 calories or less, little added sugar and a sweetener your stomach tolerates. On our list, Herbalife24 Achieve is the only NSF-certified pick; David has the most protein per calorie; Pure Protein costs the least per bar.
Are protein bars good for losing weight?
They can help when one replaces a less filling snack, because protein helps you feel full and keep muscle in a calorie deficit. Eaten on top of your usual food, a bar simply adds 150 to 240 calories.
Why do protein bars upset my stomach?
Often because of sugar alcohols such as maltitol or sorbitol, or a lot of added fiber. A scientific review found larger polyols cause gas and loose stools in people not used to them, while erythritol is usually better tolerated.
How much protein should a protein bar have?
Most bars here have 15 to 28 g. A useful check is protein per 100 calories: 10 g or more is strong for a bar. Research on higher-protein diets suggests about 25 to 30 g per meal.
Are David protein bars really 150 calories?
David's label says 150 calories. A class action reported in March 2026 alleges lab tests found far more calories and fat; David says lab methods overstate calories from its fat substitute, EPG. No court ruling had been made when we checked.
References
- NSF Certified for Sport: certified products (protein listings). NSF. (accessed October 7, 2026) Other
- What Our Mark Means (NSF Certified for Sport). NSF. (accessed October 7, 2026) Other
- Herbalife24 ACHIEVE Protein Bar Chocolate Chip Cookie Dough (nutrition facts, NSF statement, price). Herbalife. (accessed October 7, 2026) Drug label
- Chocolate Chip Cookie Dough High Protein Bar (nutrition facts and price). David Protein. (accessed October 7, 2026) Drug label
- Chocolate Deluxe Protein Bar (nutrition facts and price). Pure Protein. (accessed October 7, 2026) Drug label
- Strawberry Cheesecake Puff (nutrition facts and price). Built Brands. (accessed October 7, 2026) Drug label
- Chocolate Chip Cookie Dough Protein Bars (nutrition facts and price). Quest Nutrition. (accessed October 7, 2026) Drug label
- Chocolate Chip Cookie Dough Protein Bar (nutrition facts and price). No Cow. (accessed October 7, 2026) Drug label
- Chocolate Chip Protein Puff Bars (nutrition facts and price). Promix Nutrition. (accessed October 7, 2026) Drug label
- Barebells Brownie Batter (nutrition facts, label warning and price). Barebells. (accessed October 7, 2026) Drug label
- think! High Protein Bar, Chocolate Fudge (nutrition facts and price). think!. (accessed October 7, 2026) Drug label
- FITCRUNCH Snack Size Chocolate Chip Cookie Dough (nutrition facts and price). FITCRUNCH. (accessed October 7, 2026) Drug label
- 21 CFR 101.9 Nutrition labeling of food. Electronic Code of Federal Regulations. (accessed October 7, 2026) Government page
- 21 CFR 184.1835 Sorbitol (laxative-effect label statement). U.S. Food and Drug Administration (eCFR). (accessed October 7, 2026) Government page
- Mäkinen KK. Gastrointestinal Disturbances Associated with the Consumption of Sugar Alcohols with Special Consideration of Xylitol: Scientific Review and Instructions for Dentists and Other Health-Care Professionals. International Journal of Dentistry, 2016. doi:10.1155/2016/5967907 · PMID 27840639 (accessed October 7, 2026) Review
- Built Brands Voluntarily Recalls “Banana Cream Pie Puffs” Protein Bar Because of a Possible Health Risk. U.S. Food and Drug Administration, 2022. (accessed October 7, 2026) Government page
- Herbalife International of America, Inc. Issues Voluntary Recall for Its Protein Bar – Peanut Butter. U.S. Food and Drug Administration, 2017. (accessed October 7, 2026) Government page
- Think! and Interpac Technologies, Inc., Issue Voluntary Recall and Allergy Alert on Undeclared Tree Nuts in Think! Protein + Fiber Oatmeal. U.S. Food and Drug Administration, 2021. (accessed October 7, 2026) Government page
- Everyone’s new favorite protein bar hit with class-action lawsuit over calories. NBC New York, 2026. (accessed October 7, 2026) News (reported facts only)
- What to know about David protein bars lawsuit: Founder of cult-favorite product addresses claims about ingredient labels. Good Morning America (ABC News), 2026. (accessed October 7, 2026) News (reported facts only)
- Gatorade Recover Chocolate Caramel Protein Bar. Gatorade. (accessed October 7, 2026) Drug label
- Leidy HJ, Clifton PM, Astrup A, et al.. The role of protein in weight loss and maintenance. American Journal of Clinical Nutrition, 2015. doi:10.3945/ajcn.114.084038 · PMID 25926512 (accessed October 7, 2026) Review
- Wycherley TP, Moran LJ, Clifton PM, Noakes M, Brinkworth GD. Effects of energy-restricted high-protein, low-fat compared with standard-protein, low-fat diets: a meta-analysis of randomized controlled trials. American Journal of Clinical Nutrition, 2012. doi:10.3945/ajcn.112.044321 · PMID 23097268 (accessed October 7, 2026) Meta-analysis
Facts checked on October 7, 2026
Educational information, not medical advice. Talk with a qualified healthcare professional about your own situation. In an emergency call 911.


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