This post contains links through which we may earn a small commission should you make a purchase from a brand. This in no way affects our ability to objectively critique the products and brands we review.
Evidence Based Research To fulfill our commitment to bringing our audience accurate and insightful content, our expert writers and medical reviewers rely on carefully curated research. Read Our Editorial Policy
RXBARs are a healthy, gluten-free, dairy-free protein bar option with just a handful of minimally processed and natural ingredients.
While you might recognize their simple packaging that boasts their ingredients on the front with a cheeky “No B.S.” tagline, the bars also contain a few extra ingredients that can be viewed on the back.
0g of added sugar (with 13-15g total sugar from dates)
5g of fiber
Keep in mind that while RXBARS do not use gluten-containing ingredients—for example, they use gluten-free oats—the bars are not Certified Gluten-Free because they are made in a facility that also produces wheat-containing products.
Last but not least, remember that protein bars don’t have to be sweet—savory bars like Epic Meat Bars are great options for gluten-free people on paleo, Whole30, or keto diets.
These jerky-style bars are packed with protein with high-quality meat like bison, venison, chicken, and beef.
Epic is also the only bar on this list with an EOV (Ecological Outcome Verified) Certification, which assesses key indicators of ecosystem health, including soil health, biodiversity, and water and mineral cycles.
Two top-rated Epic Bars are the Chicken BBQ and Beef Jalapeno, which contain:
11g of protein (differs based on the bar; Epic uses grass-fed, pasture-raised, or humanely sourced chicken, beef, venison, and bison.)
0-1g of added sugar
2g of fiber
All About Protein Bars: The Basics
While “protein bar” isn’t a regulated phrase, it typically describes a pre-packaged, ready-to-eat bar high in protein.
Protein bars are most often designed to be consumed as a snack but could potentially be eaten as a meal replacement if high enough in calories and protein.
Other terms for protein bars include snack bars, nutrition bars, or energy bars, but “protein bars” will always contain protein.
In addition to being high in protein, these bars come in wide varieties, including gluten-free, dairy-free, plant-based or vegan, nut-free, keto, or low-carb.
A common way to add protein to bars is with protein powder sourced from brown rice, egg white, hemp, whey, or pea protein.
In recent years, snack bars have gotten even more creative, using savory animal protein sources like cricket and grass-fed beef.
What is Gluten-Free?
Gluten is a protein in certain grains, including wheat, barley, rye, and a wheat-rye hybrid called triticale.
People may be gluten-free for many reasons, most commonly because they have celiac disease—an autoimmune response to gluten—or are gluten-intolerant, which can cause both digestive and non-digestive symptoms.
As gluten is a component of wheat, people with a wheat allergy may also consume gluten-free foods.
According to the Food and Drug Administration, gluten-free foods must contain fewer than 20 parts per million (ppm) of gluten.
However, gluten-free labeling is optional, which is why some food brands go a step further and receive a certification.
The “certified gluten-free” symbol on a food package means the manufacturer has followed strict steps to prevent gluten cross-contamination and that a third party has independently tested the food for gluten.
This is the primary difference between “certified gluten-free” and gluten-free labeling, as the FDA does not require manufacturers to test for gluten in food products.
What to Look For in Gluten-Free Snack Bars
In addition to looking for a gluten-free label—ideally “certified gluten-free”—there are other aspects to consider, including:
Protein content: A protein bar should ideally contain 10-25g of protein, with a minimum of 8g to be considered moderate in protein.
Sugar: You should aim for no more than 8-12g of added sugar per bar—and the lower, the better. Many snack bars now utilize non-nutritive sweeteners, like monk fruit, stevia, and sugar alcohols like erythritol.
Fiber: Gluten-free fiber bars will increase satiety from the bar, keeping you full for longer and supporting digestive health.
Taste: This is a personal preference, so look for flavor combinations you think you’d enjoy. While protein bars used to be solely sweet flavors, now there are many savory bars on the market that you can try.
FAQs About Gluten-Free Protein Bars
Do ONE Protein Bars Have Gluten?
No, ONE protein bars do not have gluten; they are Non-GMO Project Verified, vegan, and gluten-free bars.
Is Nature Valley Protein Chewy Bars Gluten Free?
Many Nature Valley products are gluten-free.
The gluten-free flavors of the Nature Valley Protein Chewy Bars include Salted Caramel Nut, Peanut, Almond & Dark Chocolate, Peanut Butter Dark Chocolate, and Blueberry Nut.
Are Clif Bars Gluten Friendly?
While Clif Bars are not 100% Gluten-Free Certified, they are gluten-friendly.
This means that most of their bars are gluten-free but may have cross-contamination with some ingredients during processing.
Some Clif products, like the Clif Builders Protein Bars, are gluten-free options.
Are Kellogg’s Protein Bars Gluten Free?
No, the Kellogg’s Protein Bar line is not gluten-free.
These bars include non-gluten-free oats and wheat starch.
Are the Green Nature Valley Bars Gluten-Free?
Some Nature Valley bars are gluten-free, including the Protein Chewy Bars in the flavors of Salted Caramel Nut, Peanut Butter Dark Chocolate, Blueberry Nut, and Peanut, Almond & Dark Chocolate.
The classic “green” Nature Valley bars—the Crunchy Granola Bars—claim to be gluten-free, although they do not specify if their oats are Certified Gluten-Free.
Are Quest Bars Gluten-Free?
Yes, the Quest Protein Bars are gluten-free—all are considered to contain less than 20 parts per million of gluten.
Many people require gluten-free food—and convenient protein snack bars are no exception.
Some nutritional values to look for when buying a protein bar are sugar, protein, and fiber content, as well as Certified Gluten-Free labels and taste preferences.
Ten brands with tasty and nutritious gluten-free protein bar options are GoMacro, RXBAR, No Cow, Simply Protein, Mezcla, Truth Bar, Exo Bar, Perfect Keto, and Epic.
Unfortunately, most lye-cured olives have been sapped of a sizable portion of their nutrients by the time they get anywhere near your table, but that doesn’t mean you can’t still reap the health benefits of this ancient fruit.
Food is for physical wellness, and pharmaceutical products are for mental health conditions—that’s where most of us land when it comes to nutrition psychiatry.
Nutrition is understandably not priority one in the chaotic moments immediately following a traumatic brain injury (TBI), but as soon as the patient is stable, nutrition therapy shares center stage with other key tenets of TBI rehabilitation.
Normally, we’re content to bounce around new and/or controversial theories on nutritional concepts all day, but every so often, we have the luxury of seeing in black and white.
This may seem like a fun-killing exercise at first, but we’re not interested in coddling or pandering to our readers, so let’s get the harsh reality out of the way: most of us haven’t earned the right to binge on vacation.