Boundless Bar: The World's First Ketone-Powered Protein Bar from Ben Greenfield

Most protein bars just deliver protein. Boundless Bar from Ben Greenfield adds 1g of goBHB® ketones to 18g collagen for actual cellular energy. You get sustained focus, appetite control, and clean fuel without caffeine. Finally, a protein bar that works with your biology.

The protein bar market has been stuck in the same formula for decades: pile on the protein, add some fiber, sweeten aggressively, and call it "the next big thing"... then wait until it turns into a brick. While many of these bars deliver on macros, they miss something fundamental... actual cellular energy that works with your biology rather than against it. Boundless Bar changes that equation entirely.

Created by biohacker and performance optimization expert Ben Greenfield, Boundless Bar breaks new ground as the world's first protein bar powered by goBHB® ketones from Ketone Labs. At 1 gram of sodium BHB per bar alongside 18 grams of protein from hydrolyzed collagen, Boundless delivers sustained energy, appetite control, and cognitive support in a format that actually tastes indulgent.

This isn't yet another protein bar, it's a fundamentally different approach to portable nutrition that recognizes BHB as what Ben Greenfield calls it: the "fourth macronutrient" alongside protein, carbs, and fat.

A Boundless Protein Bar with goBHB®

Most protein bars are designed around a single metric: maximizing protein per serving while keeping calories and sugar in check. Boundless Bar takes a more sophisticated approach, recognizing that optimal performance requires more than just amino acid delivery.

The inclusion of 1g of goBHB® ketones transforms this from a simple protein bar into a dual-fuel delivery system. While the 18g of collagen protein supports tissue repair and satiety, the BHB provides immediate, clean-burning cellular energy that crosses the blood-brain barrier to fuel both physical and mental performance.

As Ben himself explains in the product launch: "The body and brain benefits of ketones are undeniable: they keep your appetite satiated and your system performing for hours and hours with clean energy. But until now, there has never been a great-tasting, clean energy bar that is both jam-packed with protein and also fueled with the power of ketones."

The clean ingredient profile matters too. Built on a foundation of cashew butter and honey with monk fruit for sweetness, Boundless avoids the sugar alcohols, seed oils, and artificial ingredients that plague the protein bar category. The result is a bar that delivers functional benefits without compromising on ingredient quality or taste.

Boundless Bar Ingredients

Each 60g Boundless Bar combines carefully selected whole-food ingredients with cutting-edge performance compounds. Here's what's inside:

• goBHB® Ketones (Sodium D/L-BHB) - 1000mg

  The centerpiece of Boundless Bar's formulation is 1 gram of goBHB® beta-hydroxybutyrate sodium, a 50/50 blend of D-BHB and L-BHB that provides both immediate and sustained ketone availability.

  Beta-hydroxybutyrate serves as an alternative cellular fuel source that can power both body and brain. Unlike glucose, which requires eleven enzymatic steps to convert into usable energy, BHB converts to acetyl-CoA in just three steps, providing faster energy delivery with less metabolic overhead.^[1]

  

  Exogenous BHB is now for everyone—from athletes needing endurance to those boosting brain function. Offering clean, lasting energy, BHB is proving versatile and backed by research.

  The DL-BHB Advantage

  Boundless Bar uses a strategic 50/50 blend of D-BHB and L-BHB forms. While D-BHB is the primary ketone your body produces during fasting or ketogenic dieting (and the one that most ketone meters measure), L-BHB offers complementary benefits. D-BHB burns quickly as fuel, providing rapid energy availability. L-BHB metabolizes more slowly, extending ketone availability over time and contributing to lipid synthesis and cellular signaling pathways.

  This dual-form approach means you get both immediate ketone availability and sustained elevation, supporting energy production over an extended period rather than a brief spike. Research shows both forms raise blood ketone levels, lower glucose, and serve as significant energy sources, with L-BHB providing more sustained ketogenic effects due to its slower clearance rate.

  The L form is also more active in the heart and acts as a signaling molecule for cognitive function,^[2] while the D form delivers the bioidentical benefits for energy, cardiovascular support, and even sleep quality. Together, they create a more complete ketone profile than either form alone.

  BHB Benefits: Beyond Basic Energy

  The 1g dose in Boundless Bar positions it as a maintenance and stacking dose rather than a performance-maximizing dose (which typically ranges from 2.5-10g). However, this amount is sufficient to provide meaningful benefits, especially when consumed regularly:

  • Appetite Regulation and Satiety

    One of BHB's most practical benefits is its effect on hunger signaling. Exogenous BHB supplementation significantly reduces ghrelin (the primary hunger hormone) while simultaneously decreasing appetite scores.^[3] This appetite suppression occurs independent of dietary state, meaning even those consuming carbohydrates experience reduced hunger with BHB supplementation.

    

    Research suggests ketones may provide crucial brain protection in contact sports. goBHB supplementation offers an alternative energy source when glucose metabolism is impaired after impact. Could this be the next frontier in athlete brain safety?

    This mechanism explains why Boundless Bar delivers such impressive satiety for a 270-calorie snack. The combination of 18g protein, healthy fats from cashew butter, and 1g of BHB creates a powerful appetite-control trifecta that keeps you satisfied for hours.

  • Cognitive Enhancement Without Stimulation

    The brain's voracious energy appetite makes it especially responsive to BHB supplementation. BHB crosses the blood-brain barrier, providing immediate fuel for neurons.^[4] This direct fueling mechanism bypasses the complexity of glucose metabolism, delivering energy when neurons need it most.

    Unlike caffeine's adenosine receptor blockade (which creates a perception of energy by preventing fatigue signals), BHB provides actual cellular fuel. Users report a clean, focused mental state without the jittery edge or crash associated with stimulants. This makes Boundless Bar ideal for afternoon productivity, pre-workout focus, or any situation where mental performance matters but you want to avoid stimulants.

  • Metabolic Flexibility

    Possibly most valuable for athletes and active individuals is BHB's ability to work alongside carbohydrates rather than replacing them. This "dual fuel" approach allows for enhanced endurance by sparing glycogen for high-intensity efforts while using BHB for steady-state energy production.^[5]

    

    Fuel your workouts with the power of "dual fuel", combining goBHB ketones and carbs for optimal performance.

    This means Boundless Bar works regardless of your dietary approach. Whether you're keto-adapted, carb-cycling, or following a mixed-macro diet, the BHB provides complementary fuel that enhances rather than disrupts your chosen strategy.

  • Reduced Inflammation and Stress Response

    BHB acts as an inflammasome inhibitor, reducing production of inflammatory cytokines like IL-1β and TNF-α.^[6] This anti-inflammatory action supports recovery from training stress while potentially enhancing mood and stress resilience.

    Animal research demonstrates that BHB supplementation reduces anxiety-related behaviors and improves performance on tests of stress resistance, likely through both its anti-inflammatory effects and direct neuronal support.^[7]

• Hydrolyzed Bovine Collagen

  The hydrolyzed bovine collagen provides the protein foundation of Boundless Bar. Collagen offers a unique amino acid profile rich in glycine, proline, and hydroxyproline, supporting connective tissue health, skin elasticity, and joint function.

  Hydrolyzed collagen is broken down into smaller peptides for rapid absorption and utilization. While it's not a complete protein for muscle building purposes (lacking sufficient leucine for maximum protein synthesis), collagen complements a varied protein intake by supporting structures that standard protein sources don't address as effectively.

  

  The combination of collagen with BHB creates interesting synergies. Research suggests BHB may have anti-catabolic effects, potentially helping preserve lean tissue during caloric restriction. When paired with collagen's structural support benefits, this combination addresses both the anabolic and maintenance aspects of tissue health.

• Cashew Butter & Cashews

  The cashew butter and whole cashews provide the creamy texture and satisfying mouth-feel that makes Boundless Bar genuinely enjoyable to eat. Beyond texture, cashews deliver monounsaturated fats, minerals like magnesium and zinc, and additional protein.

  The fat content from cashews serves multiple purposes: enhancing flavor and texture, providing sustained energy release, and supporting the absorption of fat-soluble compounds. The natural oils create that indulgent "real food" experience rather than the dry, chalky texture common in many protein bars.

• Honey

  Honey serves as both a binding agent and natural sweetener in Boundless Bar, contributing to the 15g total sugars per bar. While this might seem counterintuitive in a ketone-powered product, the inclusion is strategic.

  Honey provides readily available glucose for high-intensity efforts, creating the "dual fuel" effect where BHB handles steady-state energy demands while glucose remains available for glycolytic metabolism. This combination allows Boundless Bar to support both endurance and power output rather than optimizing for just one energy system.

  

  The natural enzymes and trace minerals in honey also contribute nutritional value beyond simple carbohydrate calories, making it a more sophisticated sweetener choice than refined sugars.

• Cocoa Butter

  Cocoa butter provides additional healthy fats while contributing to flavor and texture. Rich in stearic acid and oleic acid, cocoa butter offers cardiovascular benefits and helps create the smooth, satisfying consistency that makes Boundless Bar feel indulgent rather than medicinal.

• Monk Fruit Concentrate

  Monk fruit concentrate provides zero-calorie sweetness without the aftertaste issues common with other natural sweeteners. Monk fruit's mogrosides deliver intense sweetness (200-300 times sweeter than sugar) without impacting blood glucose or insulin levels, allowing Boundless Bar to achieve an indulgent flavor profile while keeping added sugars in check.

• Organic Natural Flavors & Ground Cinnamon

  The organic natural flavors are vanilla-based blends mounted on gum acacia, providing clean-label flavor enhancement. In the Cinnamon Roll flavor, real ground cinnamon adds authentic spice notes along with potential metabolic benefits from cinnamon's effects on insulin sensitivity.

The Boundless Bar Experience

Could BHB become as universal as creatine? This cellular energy compound delivers clean mental focus without stimulation, actually improves sleep quality, and supports metabolic health. goBHB from Ketone Labs is leading the bulk powder revolution that makes therapeutic doses accessible.

One aspect worth addressing directly: Boundless Bar has a distinct tang that comes from the BHB itself, as well as potentially the monk fruit. Beta-hydroxybutyrate sodium carries inherent acidity that contributes a slight sourness to the flavor profile. This isn't a formulation flaw -- it's the authentic taste of ketones.

For some, this creates an interesting flavor complexity that sets Boundless apart from overly-sweet protein bars. For others, it takes a bar or two to adjust to the profile. Either way, it's honest supplementation. You're getting real BHB, and there is some taste from it.

The texture strikes a balance between chewy and creamy, with the cashew butter providing richness and the collagen protein contributing structure without excessive firmness. In warmer conditions, the bar may soften slightly (a refrigerator will firm it back up). This is natural behavior for bars made with nut butters rather than synthetic binding agents.

Flavors Available

Boundless Bar currently offers two flavors:

• Cinnamon Roll - Rich cinnamon spice with creamy sweetness that delivers on its name. The combination of honey, monk fruit, and real ground cinnamon creates an indulgent profile that makes this feel more like dessert than a functional bar.
• Vanilla Cheesecake - Smooth vanilla notes with the slight tang you'd expect from actual cheesecake. The BHB's natural acidity actually complements the cheesecake concept, creating an authentic flavor experience.

Both flavors contain identical macros and ingredients, differing only in the organic natural flavors and the presence of ground cinnamon in the Cinnamon Roll variant.

If more flavors are found on PricePlow, they'll be shown below:

Conclusion: Redefining the Protein Bar Category

The supplement industry has trained consumers to expect that protein bars are nothing more than convenient protein delivery systems with some added fiber and questionable sweeteners. Boundless Bar challenges this limitation by delivering what portable nutrition should have been providing all along: actual cellular energy alongside structural protein.

The 1g of goBHB® ketones transforms Boundless Bar from a simple snack into a performance tool. While the dose is modest compared to standalone ketone supplements, it's sufficient to provide appetite control, cognitive support, and metabolic benefits that standard protein bars simply cannot match.

For formulators and industry insiders, Boundless Bar demonstrates the potential for ketone integration into existing product categories. Rather than creating standalone ketone supplements, manufacturers can enhance familiar formats with BHB to deliver novel benefits while maintaining consumer familiarity.

For biohackers and performance-focused individuals, Boundless Bar offers a convenient way to maintain ketone availability throughout the day without the commitment of ketogenic dieting or the inconvenience of mixing ketone powders. The combination of protein, healthy fats, and BHB creates a genuinely functional food that supports multiple performance systems simultaneously.

Ben Greenfield's vision for Boundless Bar -- a clean, ketone-powered protein bar that keeps your appetite satisfied and your system performing -- has materialized in a product that delivers on its promise. This is energy at the cellular level combined with structural protein support, not just another bar competing on grams of protein per dollar.

The protein bar category needed disruption. Boundless Bar provides it by recognizing that optimal nutrition requires more than just hitting macro targets. Sometimes innovation means adding something that was always missing rather than perfecting what's already there.