Cellucor - C4 AlphaBomb™ Pre-Workout

Cellucor C4 AlphaBomb™ Pre-Workout

C4 AlphaBomb™ is Cellucor's most stimulant-forward pre-workout to date — built around a 336mg tri-phase caffeine complex that includes Caffeine Anhydrous, Liposomal Caffeine, and the first-of-its-kind Deura9™ (d9-Caffeine), a deuterium-modified caffeine molecule engineered for enhanced effect and longer-lasting energy. Paired with 8g of CarnoSyn® Beta-Alanine for clinical-dose endurance, 8g of VELOX® patented pump blend, and 200mg of PeptiPump® bioactive lentil peptides, AlphaBomb is the formula C4 built specifically for high-tolerance stimulant athletes who need more from every session.

C4 AlphaBomb™ is backed by a single-serving clinical study demonstrating up to 17% increased training intensity, 13.6% increased energy, 8% improvement in overall performance, and 6% improvement in peak power output versus a control condition.

At a Glance

• Serving size: 24.5g | Servings per container: 20
• Total Caffeine: 336mg (Anhydrous + Liposomal + Deura9™ d9-Caffeine)
• CarnoSyn® Beta-Alanine: 8g (clinical endurance dose)
• VELOX® Patented Pump Blend: 8g (L-Citrulline 4g + L-Arginine 4g)
• BetaPower® Betaine Anhydrous: 1g
• PeptiPump® Bioactive Lentil Peptides: 200mg
• Alpha Yohimbine: 1.5mg
• Huperzine A: included for focus amplification
• Clinically studied formula — single-serving human trial data

Key Ingredients & What They Do

Deura9™ (d9-Caffeine) — The Novel Stimulant

Deura9™ is a deuterium-modified analog of conventional caffeine — the first ingredient of its kind in the pre-workout category. Deuterium substitution modifies the molecular structure of caffeine at specific hydrogen positions, altering how the compound is metabolized by liver enzymes. The result is a slower metabolic clearance rate, meaning the stimulant effect is both extended and smoothed compared to standard caffeine anhydrous alone. Combined with Caffeine Anhydrous for immediate onset and Liposomal Caffeine for enhanced cellular absorption, the three-phase caffeine system in AlphaBomb is engineered to hit fast, hard, and sustain — rather than peak and crash.

CarnoSyn® Beta-Alanine — 8g Clinical Endurance Dose

CarnoSyn® is the only beta-alanine form with peer-reviewed, published human clinical trials. At 8g per serving, AlphaBomb delivers double the commonly used 3.2–4g dose found in most pre-workouts — and sits at the upper range of what clinical research identifies as effective for maximizing intramuscular carnosine saturation. Carnosine buffers hydrogen ions (lactic acid) that accumulate during high-intensity efforts, directly delaying muscular fatigue and extending training volume. The 8g dose is associated with the characteristic beta-alanine tingling (paresthesia), which is harmless and temporary.

VELOX® Patented Performance Blend — 8g

VELOX® is a patented 1:1 combination of L-Citrulline (4g) and L-Arginine (4g) designed to drive nitric oxide production through dual-pathway stimulation. L-Citrulline converts to L-Arginine in the kidneys, providing sustained NO substrate, while the direct L-Arginine component contributes immediate NO precursor availability. The combined delivery through a single patented system is designed to support greater vasodilation, muscle pumps, blood flow, and nutrient delivery than either ingredient alone at equivalent doses.

PeptiPump® Bioactive Lentil Peptides — 200mg

PeptiPump® is an AI-designed bioactive peptide ingredient derived from lentil protein — exclusive to the C4 product line. Bioactive peptides in this class function as ACE inhibitors, relaxing blood vessel walls and supporting vasodilation through a mechanism distinct from NO-based pump ingredients. PeptiPump® adds a complementary, non-stimulant pathway to the pump and performance complex that works alongside VELOX® rather than duplicating it.

Huperzine A + 336mg Caffeine — Focus Stack

Huperzine A is an acetylcholinesterase inhibitor — it prevents the breakdown of acetylcholine, the neurotransmitter responsible for focus, mind-muscle connection, and cognitive sharpness. Paired with the 336mg caffeine complex, the Huperzine A amplifies the cognitive dimension of the stimulant experience — supporting sustained mental clarity and neuromuscular connection throughout the training session rather than just the initial energy rush.

Clinical Study Results

C4 AlphaBomb™ was tested in a single-serving human clinical trial. Results versus control condition:

Supplement Facts

Directions & Use

• Dose: Mix 1 serving (24.5g) with 8–10oz of water 20–30 minutes before training.
• Tolerance assessment: Begin with a half serving to assess stimulant tolerance before using a full serving. 336mg caffeine + 1.5mg alpha yohimbine is a high-stimulant combination — not appropriate for caffeine-naive users.
• Timing: Avoid use within 6 hours of sleep due to the sustained-release Deura9™ caffeine component.
• Cycling: Recommended to cycle off stimulant pre-workouts periodically to maintain sensitivity. Suggested 8 weeks on, 2 weeks off as a general guideline.
• Do not combine with other caffeine sources, stimulant medications, or additional yohimbine-containing products.

Who C4 AlphaBomb™ Is For

• High-tolerance stimulant athletes: Built specifically for experienced pre-workout users who have developed tolerance to standard 200–250mg caffeine formulas and need a higher-intensity stimulus to achieve the same training response.
• Endurance and strength athletes: The 8g CarnoSyn® dose targets both high-rep strength training and sustained aerobic output — covering a wider range of training modalities than a typical stimulant-only pre-workout.
• Athletes focused on pump and performance: VELOX® + PeptiPump® covers both NO-pathway and ACE-inhibitor pump mechanisms simultaneously — a multi-vector approach to vasodilation not found in most formulas.
• Stim-chasers seeking longer-lasting energy: The tri-phase caffeine system — fast onset (anhydrous), enhanced absorption (liposomal), and sustained effect (Deura9™) — targets athletes who find conventional pre-workouts wear off mid-session.

About Cellucor & C4

Cellucor is the brand behind the C4 pre-workout line — one of the best-selling pre-workout franchises in sports nutrition history, with over 20 years of development. C4 AlphaBomb™ represents the top of the C4 stimulant lineup, introducing Deura9™ as the first deuterium-modified caffeine in the category and backing the formula with a published single-serving clinical trial. Explore the full Cellucor lineup and all pre-workout options on our Pre-Workout collection page.

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