Cellucor | C4 Ultimate | 20 Servings

Cellucor | C4 Ultimate | 20 Servings350mg tri phase caffeine with clinical CarnoSyn endurance support C4 Ultimate is a high energy pre workout that's all about giving you a quick intensity boost and then keeping it going, instead of a big spike that fades fast. It's not focused on pumps and it's not for newbies. This is a stim heavy option with solid endurance help, some brain support from choline boosters, and a bit of thermogenic kick to make training feel sharper overall. The

350mg tri-phase caffeine with clinical CarnoSyn® endurance support

C4 Ultimate is a high-energy pre-workout that's all about giving you a quick intensity boost and then keeping it going, instead of a big spike that fades fast. It's not focused on pumps and it's not for newbies. This is a stim-heavy option with solid endurance help, some brain support from choline boosters, and a bit of thermogenic kick to make training feel sharper overall.

The standout dose here is 3.2g of CarnoSyn® beta-alanine. That's the starting point for studies showing it boosts carnosine levels in muscles over time. Beta-alanine is what your body uses to make carnosine, which acts like a buffer against the acid buildup from intense reps. In the gym, that means you can push through fatigue better during short, high-effort bursts, like 1-10 minute intervals where the burn usually stops you. CarnoSyn® is the top branded version, with tons of research backing its use for reliable results.

The stim side is 350mg total caffeine, which is right in the effective range from studies for better performance. Cellucor mixes fast-acting caffeine anhydrous with zümXR® extended-release and delayed-release beads. This setup is smarter than plain caffeine because the quick part gives you that immediate lift, while zümXR® keeps things steady so you don't crash mid-workout. Caffeine blocks adenosine receptors, which ramps up alertness, reaction time, energy feel, and workout output. It's one of the best-proven boosts in supplements.

Alpha-GPC at 200mg adds a c

Key Highlights

• 3.2g CarnoSyn® beta-alanine — this hits the low end of doses that studies show build carnosine in muscles. It's not a one-shot wonder; it shines over time by buffering acid so you can keep going in those burn-filled sets.
• 350mg total caffeine — a solid high dose that's in the range research backs for quick gains in alertness, motivation, speed, and energy during workouts. Perfect for folks used to this level.
• Multi-phase caffeine delivery — mixes fast caffeine anhydrous with zümXR® extended-release and delayed-release beads. The idea is simple: quick kick from the anhydrous, then steady energy from zümXR® to last longer.
• zümXR® caffeine technology — this isn't just fancy naming; these beads are made to release slowly, making the energy feel more even than the big rush and drop from basic pre-workouts.
• Alpha-GPC at 200mg — a form of choline that helps make acetylcholine for better focus, coordination, and feeling connected to your lifts. It's under the 300-600mg ideal for athletes, but still adds value in this stim-packed mix.
• Huperzine A at 100mcg — this blocks the enzyme that breaks down acetylcholine, so it boosts the focus effects. It pairs great with Alpha-GPC for that mental edge.
• Ginger extract at 180mg standardized for gingerols — a nice touch in a strong pre-workout. Ginger eases stomach upset and fights inflammation, so the formula feels easier on your gut.
• Capsimax® at 50mg — spot-on for the doses in studies on thermogenics. Capsaicinoids trigger receptors to bump up calorie burn and fat use, and Capsimax® is coated to avoid stomach burn.

Who Is This For?

• Seasoned muscle-builders doing high-volume workouts with quick rests. The 3.2g CarnoSyn® beta-alanine fights acid in packed sessions, and 350mg caffeine keeps you pushing from start to finish.
• Strength folks in build-up phases needing hype and focus over big pumps. C4 Ultimate ramps neural drive and urgency for better repeats, not just nitric oxide fluff.
• CrossFit and functional trainers hitting 1-10 minute intervals hard. That's beta-alanine's sweet spot from research, and sustained caffeine avoids mid-WOD energy dips.
• Pro after-work trainers wanting lasting pre energy. The anhydrous plus zümXR® mix gives a longer boost than basic caffeine options.
• Lifters chasing mind-muscle vibes beyond just stims. Alpha-GPC and Huperzine A make moves feel more precise, great for machines, bodybuilding, and detail work.
• Cutters or recomp folks needing thermogenic punch pre-train. Capsimax® and Rauwolfia add edge when calories are down and energy lags.

How to Use

If you're new to big stim pre-workouts or haven't hit 300mg+ caffeine lately, start with half a scoop. Full scoop is the real deal, taken 20-30 minutes pre-training so quick caffeine works early and slow stuff carries you through. Mix in 10-16 oz cold water in a shaker; more water tones down the flavor and makes it go down easier. Empty stomach usually means faster kick, but after a small meal smooths it if you're sensitive. Skip stacking with other high-caffeine stuff like fat burners or energy drinks unless you're watching totals and know your limits. For adds, creatine monohydrate pairs great since it's missing here, and it boosts energy recycling while beta-alanine fights acid. No need for strict cycling in healthy folks, but rotating off can refresh your stim response. Keep it sealed in a cool, dry spot to maintain the powder.

What to Expect

Minutes 0-10: you drink it down, and the ginger helps keep your stomach settled, especially with enough water. Minutes 10-20: fast caffeine starts working, you feel more alert, and the 3.2g beta-alanine often brings those tingles. Minutes 20-40: this is when you ramp up, focus sharpens, and the workout gets that aggressive vibe. Minutes 40-90: zümXR® steps in to keep energy steady instead of a quick high and low. Days 1-7: stims and focus hit right away, but beta-alanine is still building. Weeks 2-4: carnosine levels climb, and you notice better endurance in high-rep, metabolic stuff.

Key Ingredients

• CarnoSyn® Beta-Alanine — 3.2g — Clinical muscle buffering for longer hard-effort output
• Total Caffeine — 350mg — High-output energy with proven performance-enhancing dose
• zümXR® Caffeine Microspheres — Amount undisclosed within 350mg total caffeine — Fast onset with extended and delayed energy release
• Alpha-GPC — 200mg — Sharper focus and stronger mind-muscle connection
• Huperzine A — 100mcg — Helps extend the formula's cholinergic focus effect
• Ginger Root Extract — 180mg — Supports stomach comfort in a hard-hitting pre-workout
• Capsimax® Cayenne Extract — 50mg — Thermogenic support without standard capsaicin harshness
• Oligonol® — 50mg — Polyphenol support for blood flow and fatigue pathways
• BioPerine® Black Pepper Extract — 5mg — Clinically standard absorption support for the full formula
• Rauwolfia vomitoria Root Bark Extract — 1mg — Adds a sharper edge for advanced stim users

Frequently Asked Questions