10% Off & FREE Shipping

5,000+ 5-Star Reviews

Supplement Smarter To Train Harder

Improve your performance and maximize muscle growth with BULK Pre-Workout. Each scoop comes fully loaded with clean, evidence-based ingredients in clinically effective doses, with absolutely no artificial sweeteners, dyes, or fillers.

Improve your performance and maximize muscle growth with BULK Pre-Workout. Each scoop comes fully loaded with clean, evidence-based ingredients in clinically effective doses, with absolutely no artificial sweeteners, dyes, or fillers.

Illustration of a blue measuring scoop.

Clinically-Dosed Ingredients

No Artificial Colors or Sweeteners

Transparent
Ingredient Labels

3rd-Party Lab Tested

10% Off &

FREE Shipping

Bearded man performing barbell exercises in the gym.

FEATURED IN:

Pre-Workout Ingredients That Actually Work

Container of Transparent Labs BULK pre-workout supplement, strawberry lemonade flavor.

Pre-Workout Ingredients That Actually Work

8G Citrulline Mallate

The silver bullet of pre-training science, it’s 2x more energy-producing than L-arginine. Count on improved strength, aerobic performance, and muscle endurance.

The silver bullet of pre-training science, it’s 2x more energy-producing than L-arginine. Count on improved strength, aerobic performance, and muscle endurance.

Blue dumbbell icon with stylized H in the center.

4G Beta Alanine

Unlike others, we don’t skimp here. Get the fully-recommended dose needed to increase cellular carnosine levels.

Unlike others, we don’t skimp here. Get the fully-recommended dose needed to increase cellular carnosine levels.

2.5G BETAINE ANHYDROUS

BetaPure™ Betaine Anhydrous is clinically proven to trigger dramatic muscle growth. All while reducing fatigue and replenishing strength between sets.

BetaPure™ Betaine Anhydrous is clinically proven to trigger dramatic muscle growth. All while reducing fatigue and replenishing strength between sets.

Dark blue water droplet icon with a stylized smile.

200mg Organic CAFFEINE

While most pre-workouts contain synthetic caffeine anhydrous, we formulated BULK Pre-Workout with organic caffeine derived from green coffee beans (as PurCaf®)

While most pre-workouts contain synthetic caffeine anhydrous, we formulated BULK Pre-Workout with organic caffeine derived from green coffee beans (as PurCaf®)

FEATURED IN:

5,000+ 5-Star Reviews

BULK Pre-Workout

Get 10% off & Free Shipping when you subscribe to BULK Pre-Workout.

•    Clinically-dosed ingredients
•     Transparent labels

•    No artificial sweeteners, fillers, or dyes

Select Flavor:

Subscribe & Save 10%

$49.99
$49.99

• Free Shipping
• Save 10% on every order

• Cancel or pause anytime

One-Time Purchase

$49.99

5,000+ 5-Star Reviews

The Real Scoop

Transparent Labs BULK vs. The Others

Comparison of two pre-workout supplements highlighting advantages and disadvantages in a graphical format.

Paul Sklar - Transparent Labs Athlete

“BULK is a game-changer for me.”

As you get older, and even if you’re younger, if you’re not getting a lot of sleep, you’ve got family—I’ve got 5 kids—If you’ve got all these stressors, you may lack energy before a workout.


I used to be able to get up no matter what before a workout, but as I’ve gotten older, and since I’ve tried BULK—it’s a game changer for me. The energy burst that I get is steady, and I get a phenomenal pump.


The best time to take it is about 20-30 minutes before a workout. Let it settle in, start to feel it, and you’re ready to go.

Your Questions,
Answered

What does Bulk pre-workout do?

As with most pre-workouts, Bulk is designed with your performance in mind, helping you push harder for longer in the gym. For more insights into how the Bulk Pre-Workout formula actually works, please see the ingredient overviews above.