Bestseller

4.64/5.0 721 Reviews

BULK BLACK

Pre-Workout

Transparent Labs Bulk Black is the pinnacle of a clinically dosed pre-workout supplement for stim lovers. If you have experience with our regular Bulk Pre-Workout formula but want some extra "pep" in... View Ingredient Breakdown

No Artificial Sweeteners

No Artificial Coloring

Gluten-Free and Non-GMO

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BULK BLACK Pre-Workout

10% off

Customer Reviews

Based on 721 reviews
81%
(583)
8%
(56)
7%
(53)
2%
(17)
2%
(12)
S
Silvia Martinez

I really like this product, I have tried pre-workouts before and they made me feel very itchy but this one does not.

H
Heath Browning
Bulk Black for the win!

Great tasting, clean pre workout, great focus and stim with no come down.

M
Michael C

The preworkout is 5/5 stars, but the shipping delays and constant lack of availability of this product throughout the years leave a lot to be desired.

C
Chris Jones
Preworkout with a punch

This stuff is amazing! It’s invigorating and doesn’t give you any rough side effects. I’d definitely start slow (1/2 a scoop) if you’re not used to preworkout.

R
Robert

The blue raspberry foams up a little too much and has an odd after taste but I'm giving it 5 stars because it's a fantastic pre-workout. It works plain and simple.

Bestseller

Transparent Labs Bulk Black is the pinnacle of a clinically dosed pre-workout supplement for stim lovers. If you have experience with our regular Bulk Pre-Workout formula but want some extra "pep" in your step, this is the pre-workout for you. 

Each scoop of Bulk Black packs over 17 grams of proven nitric oxide boosters, hard-hitting nootropics, natural testosterone-supporting ingredients, and muscle fortifiers dosed according to scientific evidence, so you can bring the noise every time you walk into the gym. Like all Transparent Labs pre-workout formulas, Bulk Black contains absolutely no artificial sweeteners, flavors, food dyes, or added sugars.
 

Key Features 
 

  • Evidence-Based "Hardcore" Pre-Workout for Lean Muscle Gain: Like the regular Bulk Pre-Workout formula, Bulk Black features a comprehensive lineup of science-backed active ingredients to help dedicated athletes and gym-goers build muscle mass and perform at peak capacity.
     
  • Experience Intense Muscle Pumps with Proven Nitric Oxide Boosters: Bulk Black Pre-Workout contains clinical doses of L-citrulline, beta-alanine, and betaine anhydrous to enhance blood flow and give you those oh-so-satisfying, intense muscle pumps during training.
     
  • Stimulates Mental Sharpness, Focus, Drive, and Energy: Get into the "zone" every time you hit the gym with nootropics backed by scientific evidence, like alpha-GPC (AlphaSize®), caffeine (PurCaf®), L-tyrosine, and taurine. Bulk black pre-workout contains just the right amount of hard-hitting nootropics to deliver a psychotropic rush without the dreaded post-workout crash.
     
  • Epic All-Natural Flavors Sweetened with Stevia: Many other pre-workout formulas are laden with artificial sweeteners, food dyes, and unnecessary fillers. We know you care about what you put in your body, so Bulk Black Pre-Workout contains absolutely no artificial sweeteners, added sugars, or food dyes, and the formula is naturally sweetened with stevia. Choose from multiple refreshing flavor options, including Black Cherry, Cherry kiwi, Peach Mango, Blue Raspberry, Watermelon Peach, Blueberry Pomegranate, Strawberry Mango and Sour Gummy.
     
  • Third-Party Tested and Certified for Quality: As part of our commitment to industry-leading transparency and quality, every batch of this product is tested by a third-party lab for purity and potency. You can find all of our test results in the footer of our website. This product is also certified by Informed Choice to meet the highest standards for athletes and consumers.

No Artificial Sweeteners

No Artificial Coloring

Gluten-Free and Non-GMO

Customer Reviews

Based on 721 reviews
81%
(583)
8%
(56)
7%
(53)
2%
(17)
2%
(12)
S
Silvia Martinez

I really like this product, I have tried pre-workouts before and they made me feel very itchy but this one does not.

H
Heath Browning
Bulk Black for the win!

Great tasting, clean pre workout, great focus and stim with no come down.

M
Michael C

The preworkout is 5/5 stars, but the shipping delays and constant lack of availability of this product throughout the years leave a lot to be desired.

C
Chris Jones
Preworkout with a punch

This stuff is amazing! It’s invigorating and doesn’t give you any rough side effects. I’d definitely start slow (1/2 a scoop) if you’re not used to preworkout.

R
Robert

The blue raspberry foams up a little too much and has an odd after taste but I'm giving it 5 stars because it's a fantastic pre-workout. It works plain and simple.

Clinically Dosed, All Natural.

Science-Backed Formulas, Clinically Effective Dosages.

No Artificial Sweeteners, Fillers, or Dyes.

3rd-Party Lab Tested.

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