Experience powerful, stim-free performance with 5% Nutrition Pump Shot Muscle Nitric Oxide. Designed to enhance blood flow and vascularity, this fast-acting formula supports intense muscle pumps, improved endurance, and better nutrient delivery—perfect for maximizing every workout.

• Supports power, strength, and energy
• Formulated by 5x Mr. Olympia Chris Bumstead
• Tastes Like Winning flavor

Channel your inner Thavage with Christopher’s Secret Stuff. Built to support power, strength, and energy, this formula features trusted ingredients like l-citrulline, betaine, l-tyrosine, Alpha GPC, and Huperzine A to support improved cellular hydration, enhanced focus, and optimized blood flow.

What’s the secret? We’ll never tell... But this cryptic twist on CBUM’s Thavage Pre-Workout is sure to send a rush of electrifying sweetness to your tastebuds.

Frequently Asked Questions

What is l-citrulline?

L-citrulline is an amino acid involved in nitric oxide production, which increases blood flow to working muscles.

What is betaine? 

Betaine is a naturally occurring amino acid-like compound that supports exercise performance, endurance, and cellular hydration. 

What is l-tyrosine?

L-tyrosine is a non-essential amino acid and precursor to epinephrine and dopamine. Epinephrine and dopamine contribute to alertness, energy, and mental focus.

What is Alpha GPC?

Alpha-glycerylphosphoryl choline (Alpha GPC) is a naturally occurring compound found in the brain and is known to support cognitive health.

What is Huperzine A? 

Huperzine A is a derivative of Chinese club moss. It’s believed to support memory and cognitive function. 

• High-stim formula
• Supports strength, muscle pump, stamina, focus, and energy
• Informed Choice certified
• Free of GMOs, gluten, and artificial colors, sweeteners, or flavors
• Pineapple Mango flavor

Bulk Black from Transparent Labs is made for stim lovers. This clinically dosed pre-workout delivers extra “pep” with more than 17 grams of proven nitric oxide boosters, hard-hitting nootropics, natural testosterone-supporting ingredients, and muscle fortifiers—including l-citrulline malate, beta-alanine, betaine anhydrous, and sustained-release caffeine.

Frequently Asked Questions

What is nitric oxide?

Nitric oxide is a vasodilator that promotes blood circulation.

What are nootropics? 

Nootropics are substances that bolster cognitive function by altering levels of certain neurotransmitters, enzymes, or hormones in the brain. 

What is citrulline malate?

Citrulline malate is a precursor to nitric oxide, which increases blood flow to working muscles and promotes greater muscle pumps and heightened energy levels.

What is beta-alanine? 

Beta-alanine is the modified version of the amino acid alanine. The body converts beta-alanine into carnosine, which supports exercise performance and endurance. 

What is betaine? 

Betaine is a naturally occurring amino acid-like compound that supports exercise performance and endurance.

• Caffeine-free pre-workout
• Supports strength, stamina, pump, focus, and drive
• Informed Choice certified
• Non-GMO, gluten free, and contains zero artificial colors, sweeteners, or flavors
• Peach Mango flavor

STIM-FREE Pre-Workout from Transparent Labs is a caffeine-free formula designed to promote enhanced strength, stamina, pump, and focus—without jitters or sleep disruptions.

Each scoop delivers science-backed ingredients at clinically validated doses, including 8g of l-citrulline malate, 4g of beta-alanine, and 2.5g of betaine anhydrous.

Frequently Asked Questions

What is citrulline malate?

Citrulline malate is a precursor to nitric oxide, which increases blood flow to working muscles and promotes greater muscle pumps and heightened energy levels.

What is beta-alanine?

Beta-alanine is the modified version of the amino acid alanine. The body converts beta-alanine into carnosine, which supports exercise performance and endurance. 

What is betaine?

Betaine is a naturally occurring amino acid-like compound that supports exercise performance and endurance.