• Tri-stim energy experience
• Promotes explosive pumps
• Supports muscular endurance
• Formulated with AI-discovered peptides
• Hawaiian Punch^® Fruit Juicy Red flavor

Make your training hit harder than ever with C4 Ultimate. This cutting-edge pre-workout delivers the ultimate high-stim experience with TeaCrine^®, Dynamine™, and 300mg of caffeine, while promoting enhanced performance, hard-hitting pumps, and increased muscular endurance with ingredients like PeptiPump^® and CarnoSyn^®.

Frequently Asked Questions

What is TeaCrine?

TeaCrine is a patented compound that supports increased energy, mood, and focus when combined with caffeine.

What is Dynamine?

Dynamine is an alkaloid that complements caffeine to support increased energy.

What is PeptiPump?

PeptiPump is an AI-discovered designer peptide exclusively found in C4. It supports increased pump and training performance.

What is CarnoSyn?

CarnoSyn is a globally patented form of beta-alanine that is known to enhance muscular endurance.

WHEN ITʼS TIME TO GO TO BATTLE, YOU GO HARD WITH TOTAL WAR. EXPERIENCE A WORKOUT WITH INTENSITY YOU DIDNʼT THINK WAS POSSIBLE. NEW FOUND STRENGTH AND ENERGY IS JUST MINUTES AWAY. LOCK-IN AND GET READY TO BRING THE NOISE!*

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