Karbolyn is a clinically studied (with peer-reviewed, published research) carbohydrate supplement powder sourced from potato, rice, and corn. It’s designed for elite athletes looking for a fast, safe, and high-performance way to quickly and easily load muscles with lasting energy and for faster recovery. Carb load with Karbolyn in minutes, not hours, before your event or training session! Accept no substitutes! Absolutely nothing fuels your monster workouts like Karbolyn! It enters the bloodstream like a simple sugar, yet it still provides sustained energy without "crashing". Karbolyn is absorbed faster than dextrose, simple sugar, bread, pasta, rice, and other carbohydrate products sold in the marketplace - simple or complex. Pros worldwide use it for a reason! Do you want to Outlast, Outmuscle, and Outperform anything in your way? Then stop messing around with overhyped copycat products that would never make it past our lab. Use Karbolyn to maximize and maintain high-intensity training levels, power output, for greater muscle hardness and fullness… and pumps like you’ve never experienced before! Forget sugar-filled sports drinks that do very little to help fuel your game or workout. Karbolyn is 100% sugar-free, gluten-free, stimulant-free, and vegan-friendly. Ever use a carb powder that gels or clumps like cement? Most are shocked at how easily Karbolyn mixes and how delicious it tastes. The bottom line: Karbolyn ensures you are optimizing your glycogen stores before, during, and after training…without feeling bloated or cramping! EFX Sports is part of a very small, elite group of brands that actually make their own products. That’s why we can unquestionably guarantee Karbolyn always meets label claims and is 100% banned-substance free (certified by Informed-Sport). When you use Karbolyn by EFX Sports, you have the purest, most potent carbohydrate supplement available anywhere!

Triple-Action Formula: Pump H2O combines patented (US Patent 12,029,762) buffered compounds with pharmaceutical-grade glycerol for skin-splitting pumps and maximum muscle volumization in one serving. Want skin-splitting pumps that'll make your muscles look like they're about to burst through your skin? Meet PUMP H2O—the muscle volumizer about to flood your workout with next-level gains. This isn't your average pre-workout drink. We're talking about a crystal-clear formula engineered for one thing: maximum pump. Each serving loads you up with 10 grams of pure vegetable glycerol, plus our patented TauriZorb and GlyciLyn technology that'll make your muscles swell up like a hurricane just hit your gym. Why you need this in your gym bag: Instant Visual Impact: Watch your muscles expand during your workout. Skin-Tight Sensation: Feel that stretch with every rep. Ridiculous Vascularity: Veins popping like roadmaps Clean Formula: No jitters, no crash, just pure pump. The science of swole: That massive 10g glycerol dose drives nutrients and water straight into your muscle cells. Combined with our buffered taurine and glycine compounds, you're looking at a triple threat that forces your muscles to expand and hold that fullness through your entire training session. Forget choking down chalky, bitter pre-workouts. PUMP H2O hits differently with a crystal-clear Fruit Blast formula that'll have you looking forward to your pre-workout ritual. No gritty texture, no nasty aftertaste—just smooth, refreshing gains in every sip.

Supports increased energy and focus, helps raise nitric oxide levels, promotes power and endurance. Crush your goals like a beast with Gorilla Mode Pre-Workout. This formula supports increased energy, focus, and mental sharpness while ramping up power, performance, and pump.

• Caffeine-free pre-workout
• Supports strength, stamina, pump, focus, and drive
• Informed Choice certified
• Non-GMO, gluten free, and contains zero artificial colors, sweeteners, or flavors
• Peach Mango flavor

STIM-FREE Pre-Workout from Transparent Labs is a caffeine-free formula designed to promote enhanced strength, stamina, pump, and focus—without jitters or sleep disruptions.

Each scoop delivers science-backed ingredients at clinically validated doses, including 8g of l-citrulline malate, 4g of beta-alanine, and 2.5g of betaine anhydrous.

Frequently Asked Questions

What is citrulline malate?

Citrulline malate is a precursor to nitric oxide, which increases blood flow to working muscles and promotes greater muscle pumps and heightened energy levels.

What is beta-alanine?

Beta-alanine is the modified version of the amino acid alanine. The body converts beta-alanine into carnosine, which supports exercise performance and endurance. 

What is betaine?

Betaine is a naturally occurring amino acid-like compound that supports exercise performance and endurance.