Are you tired of "cutting pre-workouts" that just don't...cut it? Transparent Labs Lean Pre-Workout is an evidence-based pre-workout formula featuring clinical doses of ergogenic ingredients that help you perform your best in the gym while supporting metabolic and fat-loss efforts. Experience the difference of a true cutting pre-workout formula that gets you dialed in for every training session by enhancing blood flow, strength, endurance, focus, drive, and energy production.
Each ingredient in this pre-workout supplement was chosen based on scientific research and quality characteristics. Like all of our products, Lean Pre-Workout has absolutely no artificial color/food dyes, artificial sweeteners, or artificial flavoring.
check_box
SHIPPING INFORMATION
Key Ingredients
Our formulas are made with clean, natural ingredients, with clinically-validated dosages to support health and performance.
L-Citrulline Malate
6,000 mg
L-citrulline is a well-known nitric oxide booster that enhances blood flow, reduces muscle fatigue, and boosts endurance.
Beta-Alanine
2,000 mg
Beta-alanine is an amino acid that enhances muscular endurance, delays fatigue, and improves performance by increasing muscle carnosine levels.
BetaPure™ Betaine Anhydrous
1,500 mg
Betaine Anhydrous keeps muscle cells hydrated, supports energy production, and boosts muscle endurance, strength, and overall performance.
Acetyl-L-Carnitine (ALCAR)
1,000 mg
ALCAR provides bioavailable L-carnitine, which is necessary for transporting fatty acids into mitochondria for energy production.
Choline Bitartrate
500 mg
Choline bitartrate is a compound combining choline, a B vitamin-like molecule, with bitartrate, a salt of tartaric acid, to enhance absorption.
PurCaf® Organic Caffeine
180 mg
PurCaf® provides natural caffeine from organic green coffee beans to enhance stamina and delay fatigue.
L-Theanine
180 mg
L-Theanine has been shown to complement stimulants and smooth stimulant effects, making it a valuable addition to pre-workout formulas.
Theobromine
50 mg
Theobromine is a primary chemical in cocoa beans. Its functions in the body are suggested to be complementary to those of caffeine.
BioPerine®
5 mg
BioPerine® is a standardized extract of black pepper fruit enriched with piperine, a compound that helps your body absorb and utilize active ingredients.
Huperzine A
100 mcg
Huperzine-A is a natural nootropic that improves cognitive function by reducing the breakdown of acetylcholine.
L-Citrulline Malate
6,000 mg
L-Citrulline malate is an amino acid that enhances physical endurance due to its role in the synthesis of nitric oxide (NO) . [1]
When nitric oxide production increases, blood flow improves, allowing nutrients and oxygen to replenish muscle tissue more efficiently. This translates to greater muscle pumps and heightened energy levels.
Numerous studies have demonstrated the performance-enhancing effects of L-citrulline malate such enhancing strength, muscle power output, anaerobic and aerobic capacity [2, 3, 4]
Additionally, studies indicate that L-Citrulline Malate reduces muscle soreness and enhances immune responses during the post-exercise period, supporting recovery from physical training [5].
Beta-Alanine
2,000 mg
Beta-alanine is an amino acid that functions as a precursor to carnosine, a molecule that accumulates in skeletal muscle tissue, where it plays a crucial role in buffering the acid produced during intense physical exercise.
Supplementing with Beta-alanine has been shown to increase muscle carnosine levels, which are quickly depleted during intense exercise [6, 7].
Research shows that supplementing with Beta-alanine can significantly improve overall exercise capacity including maximal strength and power output, particularly in exercises requiring sustained maximal effort[8]. strength [9]
Beta-alanine supplementation may also increase lean muscle mass [10] and delay the onset of neuromuscular fatigue [11, 12].
BetaPure™ Betaine Anhydrous
1,500 mg
Betaine, also known as trimethylglycine, plays a role in various physiological processes, primarily as an osmolyte (helping cells maintain fluid balance) and a methyl donor (assisting in biochemical reactions). Betaine supplementation has shown promise in improving muscle endurance and enhancing strength and power in trained individuals [13, 14, 15].
While the mechanisms are not fully understood, Betaine supplementation may promote athletic performance through regulating cellular hydration, supporting creatine biosynthesis and playing a role in ATP (energy) production. [16]
Acetyl-L-Carnitine (ALCAR)
1,000 mg
Acetyl-L-carnitine (ALCAR) is a bioavailable form of L-carnitine, an essential molecule for transporting fatty acids across mitochondrial membranes to be used for energy. Acetyl-L-carnitine is suggested to have diverse ergogenic properties for athletes and gym-goers due to its potent nootropic effects that promote a healthy mood and cognitive function and protect against neurodegeneration [17, 18].
ALCAR may also enhance physical performance and target stubborn fat by facilitating fatty acid oxidation [19, 20].
Choline Bitartrate
500 mg
Choline is an essential nutrient that plays a critical role in various physiological processes, particularly in brain development and function. It serves as a precursor to acetylcholine, a neurotransmitter integral to memory, mood regulation, and muscle control. [21]
PurCaf® Organic Caffeine
180 mg
While most pre-workouts contain synthetic caffeine anhydrous, we utilize organic caffeine derived from green coffee beans (as PurCaf®).
Caffeine is a well-documented ergogenic aid that enhances physical and cognitive performance. Research indicates that caffeine improves performance by reducing perceived exertion and delaying fatigue through adenosine receptor antagonism, increasing central nervous system excitability. [22, 23]
Caffeine enhances muscle strength and power output by facilitating calcium mobilization and neuromuscular transmission [24].
L-Theanine
180 mg
L-Theanine is an amino acid found in green tea known for its ability to promote nervous system relaxation without sedation. In the context of athletic performance, it is often combined with caffeine in pre-workout supplements to enhance focus, reduce jitteriness, and improve cognitive function. Research suggests that L-Theanine modulates nervous system function, leading to improved attention, reaction time, and stress reduction—key factors for optimal workout performance. [25, 26]
Additionally, L-theanine has been shown to work in synergy with caffeine to support cognitive function and overall performance [27]. L-theanine may help smooth out the overstimulation sometimes caused by stimulants, preventing energy crashes and promoting sustained mental clarity.
Theobromine
50 mg
Theobromine is the primary alkaloid found in cocoa beans and is chemically related to caffeine, acting as a central nervous system stimulant [28].
Research has found that theobromine has differential contributions to mood and cognitive function compared to caffeine, providing further insight into the distinct yet synergistic nature of these naturally occurring stimulants [29].
BioPerine®
5 mg
BioPerine® is a patented black pepper (Piper nigrum) fruit extract standardized for its piperine content. Piperine is a natural alkaloid known for its “bioenhancer” properties, improving the bioavailability of molecules that are typically poorly absorbed or extensively metabolized in the liver [30, 31].
Huperzine A
100 mcg
This natural nootropic is known for inhibiting acetylcholinesterase, thereby increasing acetylcholine levels, a neurotransmitter vital for learning and memory.
A recent research review contends that huperzine-A, a constituent of the Chinese folk medicine Huperzia serrata, is a good candidate to improve cognitive function and may help boost memory [32].
