LEAN

ERGOGENIC TRAINING & FAT-LOSS FORMULA

No Artificial Sweeteners

No Artificial Coloring

Gluten-Free and Non-GMO

No Artificial Preservatives

Select Flavor:

One-Time Purchase

View Ingredient Breakdown

Bestseller

LEAN was developed for a single purpose: to be the most exceptional cutting pre-workout supplement, ever.

Lean contains citrulline malate, beta-alanine, and betaine—as well as a potent fat burning and thyroid support complex including acetyl-L-carnitine, chromium picolinate, and zinc—perfect for those looking to target stubborn fat, while simultaneously preventing lean muscle loss.

There's a reason PreSeries LEAN comes in jumbo-sized jugs! Each serving contains 21 active ingredients synergistically designed to provide a high-intensity pre-workout experience, while focusing systematically on fat loss and additional energy expenditure.

No Artificial Sweeteners

No Artificial Coloring

Gluten-Free and Non-GMO

No Artificial Preservatives

How does PreSeries LEAN compare to other cutting pre-workouts?	We formulated LEAN with ingredients that are supported by clinical studies. For a comparison of LEAN vs other pre-workouts and a full pre-workout buying guide, click here.
When will my order be shipped out?	All orders ship out the following business day.
How should PreSeries LEAN be taken to maximize its effectiveness?	In terms of timing, we recommend taking PreSeries BULK 20-30 minutes prior to your workout. In terms of how much water to drink with PreSeries BULK, we recommend mixing 8-12 fl. oz of water with 1/2 scoop (to assess tolerance) and mixing 16-24 fl. oz of water with 1 full scoop.
How does PreSeries LEAN compare to other pre-workouts?	Back in 2014 we set out to make the best pre-workout supplement, regardless of price, without the artificial nasty ingredients so common in packaged goods. We wanted something WE would be comfortable taking daily, and confident that it would get the job done.
I am subjected to drug testing for my sport, can I take PreSeries Pre-Workout?	Yes, absolutely. Transparent Labs contains zero illegal drugs of any kind. Depending on how rigorous your drug-testing procedures, we recommend showing your coach or administration our supplement facts panel.
Why doesn't PreSeries LEAN contain creatine?	Large doses of caffeine negates the ergogenic effects of creatine. PreSeries LEAN contains 180 mg of caffeine anhydrous.
What is the difference between PreSeries BULK, PreSeries LEAN, and PreSeries STIM-FREE?	PreSeries BULK is designed to support lean muscle growth and includes a testosterone support complex, while PreSeries LEAN is designed to support fat loss and includes a thyroid support complex. PreSeries STIM-FREE, as the name suggests, contains zero stimulants and has added elevATP.
I don't live in the United States, can I still buy PreSeries LEAN?	Yes - our fulfillment center allows us to ship worldwide. Standard shipping for international orders typically takes 10-14 business days to arrive.
Does Transparent Labs ship to my Country?	Transparent Labs ships Worldwide, except to the following countries, unfortunately, due to increasingly high fraudulent activity; Albania, Algeria, India, Lithuania, Macedonia, Romania, Russia, Tunisia, & Ukraine.
What is the difference between PreSeries BULK, PreSeries LEAN, and PreSeries STIM-FREE?	PreSeries BULK is designed to support lean muscle growth and includes a testosterone support complex, while PreSeries LEAN is designed to support fat loss and includes a thyroid support complex. PreSeries STIM-FREE, as the name suggests, contains zero stimulants and has added elevATP.
Does this product contain nuts?	We process products in our facility that have nuts (coconuts, peanuts). However, we have an allergen control program in place that sanitizes and cleans our equipment between allergen and non-allergen runs!
Is this product vegan?	Yes. PreSeries LEAN Pre-Workout is vegan.

Citrulline Malate 2:1 \| 6,000 mg	From a performance standpoint, citrulline malate is the “star child” of pre-workout science. We chose citrulline malate over L-arginine because it provides better absorption, higher plasma arginine levels, and has been found to: Improve strength, aerobic performance, and muscle endurance [1,2] Be at least twice as effective as L-arginine supplementation at raising nitric oxide [3] Participate in the Krebs Cycle and enhance creatine re-activation between sets (malate in citrulline malate [4] Enhance the use of branch chain amino acids like leucine during exercise [5] PreSeries LEAN contains 6,000 mg (6 grams) of citrulline malate per serving.
Beta-Alanine \| 2,000 mg	Supplementing with beta-alanine has been proven to increase cellular carnosine levels, which are quickly depleted during intense exercise [28, 29]. A majority of pre-workout supplements contain beta-alanine, but at significantly underdosed levels. Supplementing with proper dosing, as found in PreSeries LEAN, is shown to: Delay the onset of neuromuscular fatigue in men and women during intense exercise [30] Increase overall muscle strength [ba1] Improved muscle endurance and total work done [ba2] Provide a tingling sensation, which can be more aggressive (depending on tolerance), which is normal and safe [33] Reduce and combat the formation of altered proteins and promote the formation of healthy proteins [31] Significantly increase lean mass and decrease fat in wrestlers [32] PreSeries LEAN contains 2,000 mg (2 grams) of beta-alanine per serving.
BetaPure™ Betaine Anhydrous \| 1,500 mg	Recent clinical studies suggest that betaine supplementation triggers a significant muscle growth response. This response is independent of testosterone and is significantly advantageous alongside typical supplementation protocols. Betaine supplementation has also been shown to: Reduce fatigue when taken before and during weight training [34, 35]. Enhance phosphocreatine replenishment between sets when creatine is taken daily [36]. Increases total repetitions and volume on the bench press exercise versus placebo [37]. PreSeries LEAN* contains 1,500 mg of betaine anhydrous per serving. (PreSeries LEAN does not contain any form of creatine, as caffeine negates its absorption when taken in synchrony*)
Acetyl L-Carnitine HCl \| 1000 mg	ALCAR is a bioavailable form of L-carnitine readily absorbed across the blood-brain barrier. L-carnitine is an essential molecule required to transport fatty acids across the mitochondrial membrane in cells. In other words, it is a bona fide “vehicle” that carries fats into mitochondria so they can be converted to chemical energy (ATP). Recent evidence suggests that ALCAR also upregulates dopamine receptor expression and protects against neurodegeneration [1]. PreSeries LEAN contains 1000 mg of Acetyl L-Carnitine per serving.
Choline Bitartrate \| 500 mg
L-Theanine \| 180 mg	L-theanine is an amino acid used by the body. When combined with caffeine, L-theanine demonstrates many benefits for athletes, like: Increases reaction time, attention, and memory [14, 15, 16, 17] Reduces jitters in caffeine sensitive individuals Reduces stress and causes relaxation without affecting attention and energy [18]. PreSeries LEAN contains 180 mg of L-Theanine per serving.
PurCaf® Organic Caffeine \| 200 mg	Preseries LEAN contains all-natural caffeine sourced from organic green coffee beans. Caffeine, along with many of the complimenting stimulants and focus-enhancing ingredients in PreSeries BULK are clinically proven to reduce the sensation of effort. Approximately 200 mg of caffeine has been found and confirmed to significantly increase repetitions to failure and readiness to invest effort in athletes [22, 23]. Moderate doses of caffeine have also been found to not negatively interfere with natural thermoregulation like higher (300 mg+) caffeine-infused pre workouts do [24].
Theobromine \| 50 mg	Theobromine is the primary alkaloid found in cocoa beans, and is essentially the “little brother” of caffeine. Its functions in the body are suggested to be complementary to those of caffeine, acting as a phosphodiesterase inhibitor and central nervous system stimulant [31]. Research has also found that theobromine has differential contributions to mood and cognitive function when compared to caffeine, providing further insight into the distinct, yet synergistic nature of these naturally occurring stimulants [32]. PreSeries LEAN contains 50 mg of Theobromine per serving.
BioPerine® \| 5 mg	BioPerine® is a patented extract obtained from black pepper fruits (Piper nigrum) standardized minimum to 95% Piperine. BioPerine® may be co-administered with various nutrients to enhance their bioavailability in both human and animal. In general, BioPerine® was found to enhance absorption of nutrients by at least 30%. PreSeries LEAN contains 5 mg of BioPerine® per serving.

Citrulline Malate 2:1 \| 6,000 mg	From a performance standpoint, citrulline malate is the “star child” of pre-workout science. We chose citrulline malate over L-arginine because it provides better absorption, higher plasma arginine levels, and has been found to: Improve strength, aerobic performance, and muscle endurance [1,2] Be at least twice as effective as L-arginine supplementation at raising nitric oxide [3] Participate in the Krebs Cycle and enhance creatine re-activation between sets (malate in citrulline malate [4] Enhance the use of branch chain amino acids like leucine during exercise [5] PreSeries LEAN contains 6,000 mg (6 grams) of citrulline malate per serving.
Beta-Alanine \| 2,000 mg	Supplementing with beta-alanine has been proven to increase cellular carnosine levels, which are quickly depleted during intense exercise [28, 29]. A majority of pre-workout supplements contain beta-alanine, but at significantly underdosed levels. Supplementing with proper dosing, as found in PreSeries LEAN, is shown to: Delay the onset of neuromuscular fatigue in men and women during intense exercise [30] Increase overall muscle strength [ba1] Improved muscle endurance and total work done [ba2] Provide a tingling sensation, which can be more aggressive (depending on tolerance), which is normal and safe [33] Reduce and combat the formation of altered proteins and promote the formation of healthy proteins [31] Significantly increase lean mass and decrease fat in wrestlers [32] PreSeries LEAN contains 2,000 mg (2 grams) of beta-alanine per serving.
BetaPure™ Betaine Anhydrous \| 1,500 mg	Recent clinical studies suggest that betaine supplementation triggers a significant muscle growth response. This response is independent of testosterone and is significantly advantageous alongside typical supplementation protocols. Betaine supplementation has also been shown to: Reduce fatigue when taken before and during weight training [34, 35]. Enhance phosphocreatine replenishment between sets when creatine is taken daily [36]. Increases total repetitions and volume on the bench press exercise versus placebo [37]. PreSeries LEAN* contains 1,500 mg of betaine anhydrous per serving. (PreSeries LEAN does not contain any form of creatine, as caffeine negates its absorption when taken in synchrony*)
Acetyl L-Carnitine HCl \| 1000 mg	ALCAR is a bioavailable form of L-carnitine readily absorbed across the blood-brain barrier. L-carnitine is an essential molecule required to transport fatty acids across the mitochondrial membrane in cells. In other words, it is a bona fide “vehicle” that carries fats into mitochondria so they can be converted to chemical energy (ATP). Recent evidence suggests that ALCAR also upregulates dopamine receptor expression and protects against neurodegeneration [1]. PreSeries LEAN contains 1000 mg of Acetyl L-Carnitine per serving.
Choline Bitartrate \| 500 mg
L-Theanine \| 180 mg	L-theanine is an amino acid used by the body. When combined with caffeine, L-theanine demonstrates many benefits for athletes, like: Increases reaction time, attention, and memory [14, 15, 16, 17] Reduces jitters in caffeine sensitive individuals Reduces stress and causes relaxation without affecting attention and energy [18]. PreSeries LEAN contains 180 mg of L-Theanine per serving.
PurCaf® Organic Caffeine \| 200 mg	Preseries LEAN contains all-natural caffeine sourced from organic green coffee beans. Caffeine, along with many of the complimenting stimulants and focus-enhancing ingredients in PreSeries BULK are clinically proven to reduce the sensation of effort. Approximately 200 mg of caffeine has been found and confirmed to significantly increase repetitions to failure and readiness to invest effort in athletes [22, 23]. Moderate doses of caffeine have also been found to not negatively interfere with natural thermoregulation like higher (300 mg+) caffeine-infused pre workouts do [24].
Theobromine \| 50 mg	Theobromine is the primary alkaloid found in cocoa beans, and is essentially the “little brother” of caffeine. Its functions in the body are suggested to be complementary to those of caffeine, acting as a phosphodiesterase inhibitor and central nervous system stimulant [31]. Research has also found that theobromine has differential contributions to mood and cognitive function when compared to caffeine, providing further insight into the distinct, yet synergistic nature of these naturally occurring stimulants [32]. PreSeries LEAN contains 50 mg of Theobromine per serving.
BioPerine® \| 5 mg	BioPerine® is a patented extract obtained from black pepper fruits (Piper nigrum) standardized minimum to 95% Piperine. BioPerine® may be co-administered with various nutrients to enhance their bioavailability in both human and animal. In general, BioPerine® was found to enhance absorption of nutrients by at least 30%. PreSeries LEAN contains 5 mg of BioPerine® per serving.