Experience the only energy drink that’s naturally sweetened and flavored, packed with clinically effective doses of 8 scientifically proven ingredients designed to boost energy, sharpen focus, elevate mood, and enhance cognitive performance.
Backed by 404 peer-reviewed scientific studies, our energy drink is formulated with clinically supported ingredients and doses for maximum effectiveness.
- Naturally sweetened and flavored — zero sugar, no soy, no artificial sweeteners, no synthetic flavors, no food dyes, no fillers, and absolutely no unnecessary additives.
- Tested for purity and potency in a state-of-the-art, ISO 17025-accredited third-party laboratory to ensure safety, quality, and effectiveness.
Legion Energy Drink Ingredients (3,577 milligrams per serving)
PurCaf® Natural and Organic Caffeine (150 milligrams per serving)
Caffeine is a naturally occurring compound found in several plants native to Africa, East Asia, and South America, including tea leaves, cocoa beans, and coffee beans.
PurCaf® is a premium, organic, and patented form of caffeine extracted from non-GMO green coffee beans using a proprietary clean-water process. This ensures a pure, high-quality source of natural caffeine without harsh chemicals.
Compared to synthetic caffeine, naturally derived caffeine offers a smoother, cleaner energy boost and a better taste. Many users report enhanced alertness without the “jitters” or “crash” often linked to synthetic versions—possibly due to chlorogenic acids and antioxidants naturally present in PurCaf® but absent in artificial caffeine.
How PurCaf® caffeine benefits your body:
- Boosts mood and elevates energy levels
- Enhances focus, drive, and mental clarity
- Increases metabolic rate to support energy expenditure
- Improves strength and power output during training
- Extends endurance for better performance and stamina
- Optimizes anaerobic capacity, helping you push harder during high-intensity workouts
For optimal results, the clinically effective dosage of PurCaf® caffeine ranges from 50 mg up to 6 mg per kilogram of body weight, depending on your goals, tolerance, and activity level.
Suntheanine® L-Theanine (150 milligrams per serving)
L-theanine is a naturally occurring amino acid found primarily in tea leaves. It plays a key role in balancing two important brain chemicals—glutamate and GABA—which influence nerve signaling, mood, cognitive performance, and overall mental well-being.
Suntheanine® is a patented, premium form of L-theanine and the most clinically validated version available, supported by over 40 peer-reviewed studies demonstrating its safety and effectiveness.
Research shows that Suntheanine® L-theanine supplementation may:
- Reduce the impact of mental stress, helping you stay calm and focused
- Promote deep relaxation without causing drowsiness
- Improve mood, memory, and attention, especially when paired with caffeine for synergistic effects
- Boost nitric oxide production, enhancing blood flow and circulation
For optimal results, the clinically effective dosage of L-theanine when combined with caffeine is between a 1:1 and 2:1 ratio of theanine to caffeine, depending on your desired balance of focus and relaxation.
Cognizin® Citicoline (250 milligrams per serving)
Citicoline is a naturally occurring compound in the brain that plays a vital role in supporting cognitive health and enhancing brain function. It helps increase levels of phosphatidylcholine, a key component of cell membranes essential for brain structure, communication, and performance.
Additionally, citicoline boosts the production of acetylcholine, a crucial neurotransmitter involved in learning, memory formation, and muscle contraction.
Cognizin® is a patented, clinically validated form of citicoline, backed by 16 years of scientific research and the only form studied extensively in healthy adults.
Research shows that Cognizin® citicoline supplementation may:
- Improve focus and memory retention, enhancing overall mental performance
- Boost attention span and increase mental processing speed
- Support long-term brain health by helping reduce cognitive decline as we age
For optimal benefits, the clinically effective dosage of citicoline ranges between 250 mg and 500 mg daily.
Taurine (2,000 milligrams per serving)
Taurine is a naturally occurring amino acid found primarily in seafood and meat, but unlike most amino acids, it isn’t used to build proteins. Instead, taurine plays a critical role in maintaining cardiovascular health, muscle function, and cellular protection by reducing oxidative stress and regulating neurotransmitter activity.
Research shows that taurine supplementation may:
- Enhance focus, attention, and reasoning, especially when combined with caffeine
- Reduce unwanted side effects of caffeine, such as jitters or restlessness
- Help prevent sugar crashes by slowing glucose release into the bloodstream
For optimal results, the clinically effective dosage of taurine ranges from 1 g to 6 g per day, with most benefits observed in the 1 g to 3 g range.
B Vitamin Complex (27.4 milligrams per serving)
B vitamins are a group of essential, naturally occurring nutrients that play a vital role in energy metabolism, helping your cells convert food into usable energy. Beyond energy support, they also contribute to mood regulation, feelings of wellness, and the proper functioning of the brain, nervous system, and cardiovascular health.
While B vitamins don’t act like stimulants such as caffeine, many people report feeling more energized and focused when supplementing with them. This is because B vitamins are required for key biochemical processes that influence energy production, and ensuring optimal levels helps these processes work more efficiently.
Research shows that B vitamin supplementation—particularly B2, B3, B6, and B12—may:
- Reduce stress and promote relaxation
- Enhance mental clarity, focus, and sustained energy
- Boost cognitive performance and memory retention
- Improve overall mood and feelings of well-being
While there is no single clinically established dosage for B vitamins, the amounts included in our energy drink are specifically formulated with optimal levels of B2, B3, B6, and B12 to help maximize energy, mood, and cognitive performance.
Naturally Sweetened and Flavored
While artificial sweeteners may not be as harmful as some claim, research suggests that regular consumption of these chemicals may negatively impact overall health.
That’s why we choose better alternatives — using only natural sweeteners like stevia, erythritol, and monk fruit. These plant-based options are not only safe and well-tolerated, but studies show they may also offer several additional health benefits, including:
- Improved nutrient absorption
- Healthy cholesterol balance
- Reduced inflammation levels
- Better overall metabolic support
By prioritizing natural, science-backed ingredients, we ensure every sip supports both your well-being and performance.
No Artificial Food Dyes, Fillers, or Other Unnecessary Junk
Just like artificial sweeteners, research shows that artificial food dyes and fillers may cause negative effects in some individuals, including gastrointestinal toxicity and behavioral disturbances.
That’s why we prioritize clean, natural ingredients by using:
- Natural colorings and flavorings derived from fruits and other plant-based sources
- Naturally derived ingredients that improve texture and enhance shelf life
- Safe, high-quality components that simplify the manufacturing process without compromising on purity or performance
Our approach ensures better quality, cleaner formulas, and healthier products you can trust.
Third-Party Lab Tested for Purity and Potency
Our energy drinks undergo rigorous testing in a state-of-the-art, ISO 17025-accredited third-party laboratory to ensure the highest standards of quality and safety. Every batch is carefully examined for heavy metals, microbes, allergens, and other potential contaminants, guaranteeing full compliance with FDA purity and safety standards.
Made in the USA with Globally Sourced Ingredients
If you want to make sure the supplements you take every day are truly safe, effective, and high-quality, choose a company that:
- Sources ingredients exclusively from premium, trusted suppliers around the world — because great supplements start with exceptional raw materials.
- Tests every product in accredited third-party laboratories to verify purity, potency, and safety with complete accuracy.
- Manufactures in the USA, following some of the strictest quality, safety, and regulatory standards in the world.