4.5/5.0 447 Reviews
PreSeries BULK BLACK is the epitome of a hard-hitting, clinically dosed pre-workout. With 100% formula transparency, proven nitric oxide boosters, hard-hitting nootropics, natural testosterone-supportin... View Ingredient Breakdown
No Artificial Sweeteners
No Artificial Coloring
Gluten-Free and Non-GMO
No Artificial Preservatives
|When will my order be shipped out?||All orders ship out the following business day.|
|How should PreSeries BULK BLACK be taken to maximize its effectiveness?||In terms of timing, we recommend taking PreSeries BULK BLACK 20-30 minutes prior to your workout. In terms of how much water to drink with PreSeries BULK BLACK, 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 BULK BLACK 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. If you want to see how we compare PreSeries BULK BLACK to other well rated pre-workouts, check out our best pre-workout blog post here.|
|I am subjected to drug testing for my sport, can I take PreSeries BULK BLACK 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 BULK BLACK contain creatine?||Large doses of caffeine negates the ergogenic effects of creatine. PreSeries BULK contains 180 mg of caffeine anhydrous.|
|What is the difference between PreSeries BULK BLACK, PreSeries LEAN, and PreSeries STIM-FREE?||PreSeries BULK BLACK 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 BULK BLACK?||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.|
|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 BULK BLACK is vegan!|
|Citrulline Malate 2:1 8,000 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:
PreSeries BULK BLACK contains 8,000 mg (8.0 grams) of 2:1 citrulline malate per serving.
|Beta-Alanine 4,000 mg|
Supplementing with beta-alanine has been shown to increase muscle carnosine levels, which are quickly depleted during intense exercise [5, 6].
In turn, carnosine acts like a buffer in muscle cells to attenuate the lactic acid and hydrogen ions that accumulate when you’re pushing yourself in the gym.
A majority of pre-workout supplements contain beta-alanine, but at inefficacious doses. We made sure to include a clinical dose of 4,000 mg beta-alanine in every scoop of BULK BLACK. Pertinent evidence-based benefits of beta-alanine include:
PreSeries BULK BLACK 4,000 mg (4.0 grams) of beta-alanine per serving.
|BetaPure™ Betaine Anhydrous 2,500 mg|
Recent clinical studies suggest that betaine supplementation triggers a significant muscle anabolic response and helps hydrate muscle cells by acting as an osmolyte. Even better, betaine anhydrous is synergistic with other ergogenic ingredients in BULK BLACK, notably beta-alanine and citrulline malate 
Betaine supplementation has also been shown to:
PreSeries BULK BLACK 2,500 mg (2.5 grams) of BetaPure™ Betaine Anhydrous per serving.
|Taurine 1,300 mg|
Taurine is an amino acid-like molecule that is essential to pre-workout supplementation. Taurine competitively interacts with beta-alanine; thus, supplementation with beta-alanine and without taurine can lead to states of taurine deficiency .
PreSeries BULK BLACK contains 1,300 mg (1.3 grams) of Taurine per serving.
|L-Tyrosine 1000 mg|
L-tyrosine is a conditionally essential amino acid necessary for dopamine synthesis. It is an effective nootropic for increasing focus, motivation, and cognitive function. Notable benefits of L-tyrosine supplementation include:
PreSeries BULK BLACK contains 1,000 mg (1.0 gram) of L-tyrosine per serving.
|AlphaSize® Alpha-GPC 300 mg|
AlphaSize® is a patented form of alpha-glycerylphosphorylcholine (GPC), a highly bioavailable source of choline. Choline is an essential B vitamin that the body uses to create acetylcholine and phosphatidylcholine, both of which play important roles in cognitive function and neurotransmission. Several human studies show that alpha-GPC increases mental performance and physical performance, especially when taken in conjunction with caffeine . Hence, alpha-GPC has both nootropic and ergogenic properties, making it ideal as a pre-workout ingredient.
PreSeries BULK BLACK contains 300 mg of alpha-GPC per serving.
|L-Theanine 200 mg|
L-theanine is an amino acid used by the body. When combined with caffeine, L-theanine demonstrates many benefits for athletes, like:
PreSeries BULK BLACK contains 200 mg of L-Theanine per serving.
|Caffeine Anhydrous 275 mg|
Caffeine, along with many of the complementing focus-enhancing ingredients in PreSeries BULK BLACK are clinically proven to reduce perceived effort when training. A dose of 2 to 4 mg of caffeine per kg of bodyweight has been shown to significantly increase repetitions to failure and readiness to invest effort in athletes [30, 31].
PreSeries BULK BLACK contains 275 mg of Caffeine Anhydrous per serving.
|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 . 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 .
PreSeries BULK BLACK contains 50 mg of Theobromine per serving.
|Infinergy™ (Dicaffeine Malate)30 mg|
Infinergy™ is a trademarked caffeine salt of malic acid (dicaffeine malate) that was created to prolong the ergogenic effects of caffeine. Rather than the abbreviated “high” and subsequent crash people often experience after drinking a large cup of coffee, Infinergy™ provides a smoother and longer-lasting increase in mental performance and thermogenesis, all without the jitters and crashing from ordinary caffeine.
PreSeries BULK BLACK contains 25 mg of Infinergy™ (Dicaffeine Malate) per serving.
|Astragin™ 50 mg|
AstraGin™ is a novel extract of Astragalus membranaceus and Panax notoginseng — two adaptogenic herbs that have a longstanding history in traditional Chinese medicine. The constituents in these plants are suggested to selectively enhance the absorption of biomolecules by increasing intestinal permeability.
PreSeries BULK BLACK contains 50 mg of Astragin™ per serving.