C4 Ultimate Pre Workout

C4 Ultimate Pre Workout

The Ultimate Pre-Workout Experience
Fully-Loaded Formula in Single Scoop Dose
9.3  out of 10  (178 Reviews)
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Product Overview

C4 Ultimate Containers

Fully Loaded Formula

In Single-Scoop Dose

The Ultimate Pre-Workout

The word "ultimate" gets tossed around a lot these days. People love to claim they've created the ultimate training method, diet, or supplement, often without substantial evidence to support such bold statements. So what makes C4 Ultimate worthy of its name? How do we back up the word "Ultimate" to ensure this is the strongest, most effective, most powerful pre-workout on the market?*

Take a look at the key factors
that make C4 Ultimate.

Powerful Key Ingredients

Ultimate Energy

Caffeine (300mg)

Caffeine is a well-studied stimulant that has numerous energy, performance, and even fat-loss benefits.*


Tetramethyluric acid, or theacrine, is an alkaloid structurally similar to caffeine. Preliminary human study results suggest that the body doesn't adapt to TeaCrine as quickly as it does to caffeine, therefore prolonging tolerance.*


This plant extract may act similarly to yohimbine, and its effects are amplified when paired with caffeine.*

Ultimate Pumps

Citrulline malate (6g)

A precursor to arginine and nitric oxide production, 6 grams of citrulline may support an increase in nitric oxide levels. It supports the ultimate pump, especially when paired with arginine. Note that 6 grams is the entire scoop size of some pre-workouts. In C4 Ultimate, it's just the pump foundation.*

NO3-T creatine nitrate (1.5g)

A university-studied form of creatine formed when creatine is bonded with nitrate anions. On the individual level, Creatine and nitrate are powerhouse elements, but when fused together, they create an unstoppable bond.


Shown to significantly increase arginine and nitric oxide levels for up to 3 hours.*

Arginine AKG

Precursor to nitric oxide that promotes nitric oxide production in the body.*

Ultimate Performance

CarnoSyn beta-alanine (3.2g)

A full, clinical dose of this patented form of beta-alanine supports muscular endurance. Beta-alanine can sometimes produce a harmless skin-tingling sensation.*

Betaine anhydrous (1.5g)

Helps maintain cellular electrolyte balance and promotes hydration.*

Ultimate Focus

AlphaSize A-GPC

Supports an increased mind-muscle connection in the gym.*


Supports positive mood and cognitive function.*

Huperzine A

A nootropic that may support memory, learning, and concentration.*

Taurine (1g)

Helps support mental performance when paired with caffeine and B vitamins.*

A Legacy of Excellence

We've been pioneering, building, and perfecting pre-workouts longer than most brands have been in sports nutrition. For nearly a decade, the C4 family has led the pre-workout category with explosive energy and performance, the best flavors, clinically studied ingredients, and cutting-edge formulas.*

We're obsessed with research, improvement, and results. We're innovators and leaders, and we're not new to our work. We have a legacy of building the best, most effective pre-workouts available.

We can comfortably say, without a doubt, that the C4 Ultimate line is the strongest series of pre-workouts we've ever created.*

C4 Ultimate is the culmination of a decade of hands-on work in the pre-workout space. We're not talking about building a product in a matter of months. C4 Ultimate combines everything we've learned over years of study and real-world product development to deliver energy you can feel, powerful pumps, muscular endurance, extreme focus, and peak performance. Consider C4 Ultimate a masterpiece from pre-workout craftsmen.*

Clinically Studied,
Patented Ingredients

No matter how big the scoop size or how revolutionary it claims to be, a great pre-workout starts with best-in-class ingredients used in effective doses. Since ingredients are not created equal, patented ingredients are important for multiple reasons, particularly because they're backed by quality manufacturers who rigorously test and research their products to ensure efficacy and safety.

Patented ingredients are the best in their categories, or they're so novel that they're complete category-creators. We're proud to say that C4 Ultimate contains six patented ingredients from leading ingredient companies of the highest caliber:

The Ultimate Formula

C4 Ultimate Container

Creating the perfect pre-workout for people who demand nothing less than the best from themselves and their supplements has been no easy task. It's taken us years of work, the best ingredients from around the globe, and a consistent commitment to innovation, formulation, and product development.

We're proud to say that the formula powering each serving of C4 Ultimate delivers an ultimate experience on every level: the ultimate in energy, pumps, endurance, performance, and focus. This is not a pre-workout for the weak for weekend warrior. C4 Ultimate has been engineered for athletes, lifers, and lifters who aren’t afraid to work, sweat, and hustle for their next best.*

The C4 Ultimate formula delivers the explosive energy and performance you love from C4, plus a powerful combination of nootropics, mood enhancers, pump amplifiers, and endurance support to push you to your ultimate limit.*

The Cellucor Difference

Every tub of C4 Ultimate is the result of rigorous testing and research to ensure you get the highest-quality product possible, without compromise.

Our commitment to the following areas makes Cellucor stand above the pack:


We put every flavor of C4 through 100s of flavor tests. Seriously. And we don't settle. If a flavor doesn't measure up, we move on. We're dedicated to making the industry's best-tasting products, and nothing less will do.


We utilize an industry-leading evaluation method when working with ingredient suppliers, and we conduct additional stability testing on our raw ingredients to make sure our formulas have great physical stability. We also visit our key ingredient suppliers directly so we know exactly what we're putting in products, and we're very selective about working with only the best partners. (The same is true with our packaging.)

Product Development

Our in-house product development team has years of research and expertise, and a true passion for sports nutrition. We don't rely on a single person's opinion to build product. We have a team of world-class formulators who evaluate, debate, and discuss the latest research before we even put a formula down on paper. Add our incredible relationships with the world's best ingredient manufacturers, internal testing, athlete feedback, and years of leading the industry, and you get a development process that's second to none.

Commitment to Customers

We're committed to your results. At the end of the day, C4 Ultimate is your product. If you don't like it for any reason, we'll gladly refund or replace it. We're here for you.

Are You Ultimate?

Ratings & Reviews

C4 Ultimate Pre Workout
Overall Rating
178 Ratings
Verified Buyer Rating
43 Ratings
Average Flavor Rating
8 Flavors
Top Rated Flavor
Raspberry Lemonade
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Dec 27, 2019
Verified Buyer
  • 10 Orange Mango
  • 9 Icy Blue Razz

Orang Mango is easily the best tasting pre-workout I've ever had. Icy Blue Razz is also good but is VERY blue, just dont be surprised if things (inside and out) change color

Oct 27, 2019
  • 6 Sour Batch Bros

Looking for a break from exotic stims (DMHA, Eria, etc.), I decided to finally give C4 Ultimate it's chance. I had used the original C4 in the past and never really thought much of it. Seemed like a pretty safe pre-workout, albeit underdosed in a few categories. C4 Ultimate really lives up to its name, however. There's no underdosing on this label, as you get full shots of Cit-Mal, Beta-Alanine, Betanine, and Taurine. The 300 mg of caffeine falls right into the sweet spot for me, as 400 mg is reserved for days I want my eyes to pop out of my skull, and 200 mg for those low-key workouts. It's a clean energy ride, and doesn't feature a crash at the end. Only real complaint I have is that despite the caffeine amount being disclosed, the rest of the Energy & Focus blend is not. Also, the only flavor I tried is Sour Batch Bros. It's not necessarily bad, just mundane. More like a mute gummy-worm flavor, yet it still mixes easily and doesn't come out like syrup. In all, I'd say this is the best non-exotic stimulant pre-workout I've tried.

Aug 29, 2019
Verified Buyer
  • 10 Orange Mango

Have been using Dymatize pre-workout for sometime. Good product but I decided to try something different and went for the Cellucor C4 Ultimate. The flavor Orange Mango was not bad. More importantly it thoroughly dissolved in the shaker. No grainy residue on the bottom of the shaker like Dymatize. My workout at the gym was even better than when using Dymatize. Seemed to have more strength and stamina. When I finish the last of my Dymatize I will be switching to Cellucor C4 Ultimate. For info, I am a 67 year old male who has been training for about 40 years.

Aug 27, 2019
  • 1 Icy Blue Razz

The worst pre workout ever. No energy, no effects on my workout. I was using Pre-Gym and Nitraflex before this and both of them were amazing. After reading the reviews, I decided to change my pre-workout and I'm highly disappointed. Stomach issues, blue stool and fatigue are just some of the problems with this product. DO NOT ORDER! I thought because of the premium price Cellucor might've put better ingredients but no. This is as bad as they come.

Aug 19, 2019
Verified Buyer
  • 1 Strawberry Watermelon
  • 3 Sour Batch Bros
  • 10 Orange Mango

I normally don't write reviews, but these flavors required it. I chose the Sour Batch and Strawberry Watermelon based off ratings and they were both terrible. Both me and my husband (who loves sour) had a hard time getting them down. The strawberry had a weird, but strong plastic flavor. The Orange Mango, which I ordered on a whim, was fantastic and easy to get down. Highly recommend!

Aug 12, 2019
  • 9 Orange Mango

Didn't do a thing to me but it tasted real good! I felt no difference in energy, no tingles, no pump.

Aug 10, 2019
  • 10 Icy Blue Razz
  • 10 Strawberry Watermelon

Def had great pumps and strong lifts with this pre workout def one of the better ones out there. I had to stop using this because my stomach didn't agree with the artificial coloring and flavors for some reason this would destroy my stomach

Jul 18, 2019
Verified Buyer
  • 9 Orange Mango
Jul 04, 2019
  • 9 Orange Mango

Balanced dosage in the various ingredients.

Mar 31, 2019
  • 8 Orange Mango

Now that's a good pre-workout buzz...... Liked the stuff. Has most of what I look for in a pre-workout. And all the energy. Got me hopped up for my workout. Recommend.

Mar 31, 2019
  • 10 Orange Mango

Disclaimer: I havent had a pre workout in a very long time and received this as a sample from another product ordered. With that said, I found that this product greatly enhanced my workout and will consider purchasing, but at the price listed I'm tempted to look elsewhere hoping for similar results.

Mar 16, 2019
  • 10 Icy Blue Razz

This is a great Pre workout! Love the energy boost, the pump is great. Keeps me focused and going the whole workout! However.... The Blue Razz is little heavy on the "FD&C Blue#1. I feel like it doesn't really need to be so heavy on the blue dye lol, but that's my opinion. (It is the dye C4 uses to make it blue. It is a very strong dye and if you are like me, my body does not process it well and most comes out later. something to keep in mind, but does not stop me from using this amazing product!)

Feb 28, 2019
Verified Buyer
  • 10 Strawberry Watermelon

Best preworkout drink I have ever used.

Feb 12, 2019
  • 9 Cherry Limeade

I got this in a sample pack when I ordered a protein powder, the taste is good and the results were also great.

Jan 22, 2019
  • 10 Sour Batch Bros

I was very blessed to try this product thanks to a Cellucor promo The flavor is exactly what you'd expect it to be. It's sour but if you're into sour candy then you're going to love it. If you like sour patch kids candy, then this is your flavor to go with. I love how it tastes and it's something i look forward to. 10/10 Mixability is also perfect. There are no chunks, no residue whatsoever. Not much foaming either. It's a perfect pre-workout to mix. 10/10 Effectiveness: C4 Ultimate is a pretty strong pre-workout. It has 300 mg of caffeine in it. But it gave me a lot of energy during my entire workouts. The focus was extremely good, didn't get distracted but was only thinking about lifting heavy. I felt strong and have made some PR's with this product. I definitely recommend it and 1 scoop is more than enough. 9.5/10 Supplement: C4 Ultimate has a lot of good ingredients. It has 300 mg caffeine, it has a lot of vitamins such as vitamin C and B12. It has a good mix of everything you need and it is a highly effective pre-workout. Can't go wrong with it. 10/10 Overall i loved C4 Ultimate, it's an amazing product. It's not the cheapest of all pre-workouts with $2 per scoop, however you definitely getting your money's worth and with a great flavor, mixability, effectiveness etc you can't go wrong with this one. 10/10 overall. Great supplement.

3 Sizes
20 Servings
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1 Flavor
Sour Batch Bros
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Price: $39.99  ($2.00 / Serving)
On Backorder
Flavor Rating: 7.8
Fully-Loaded Formula in Single Scoop Dose

What's in Cellucor C4 Ultimate Pre Workout

Serving Size: 1 Scoop (19.5g)
Servings Per Container: 20
Amount Per Serving % DV
Calories 5       
Total Carbohydrate 1 g <1%**
Vitamin C (as Ascrobic Acid) 250 mg 417%
Niacin (as Niacinamide) 60 mg 300%
Vitamin B6 (as Pyridoxal-5-Phosphate) 1 mg 50%
Folic Acid 500 mcg 125%
Vitamin B12 (as Methylcobalamin) 70 mcg 1,167%
Calcium (as Calcium Silicate) 94 mg 9%
Citrulline Malate 6g
CarnoSyn® Beta-Alanine 3.2g
Creatine Nitrate (NO3-T®) 1.5g
Betaine Anhydrous 1.5g
Nitrosigine® Inositol-Stabilized Arginine Silicate 1.5g
Arginine Alpha Ketoglutarate 1g
Taurine 1g
C4® Ultimate Energy & Focus Blend 858mg
N-Acetyl-L-Tyrosine, Caffeine Anhydrous (300mg), AlphaSize® A-GPC (Alpha-Glyceryl Phosphoryl Choline), Zembrin® (Sceletium Tortuosum) aerial parts extract, Rauwolfia vomitoria root extract, Huperzine A (from Toothed clubmoss (Huperzia serrata) arial parts extract)
** Percent Daily Values (%DV) are based on a 2,000 calorie diet.
† Daily Value not established.
Other Ingredients:
Calcium Silicate, Natural & Artificial Flavors, Silicon Dioxide, Polydextrose, Sucralose, Acesulfame Potassium, Malic Acid, Citric Acid, FD&C Yellow #5, FD&C Blue #1.

Directions For C4 Ultimate Pre Workout: Take one serving (1 scoop) of C4® Ultimate, mixed with 10-12 fl. oz. of water 20-30 minutes before training. During your workout, it is recommended that you drink plenty of water or performance beverage to stay hydrated. Some individuals may experience a harmless tingling sensation, which is attributable to beta alanine. USE ONLY AS DIRECTED.

Warnings: THIS PRODUCT IS ONLY INTENDED TO BE CONSUMED BY HEALTHY ADULTS, 18 YEARS OF AGE OR OLDER. Do not use this product if you are pregnant, nursing, currently taking PDE-5 inhibitors or nitrates for chest pain. Do not take this product before consulting a licensed, qualified, health care professional if you are taking any other dietary supplement, prescription drug or over-the-counter medication; or if, you suspect you have or have been treated for, diagnosed with or have a family history of, any medical condition. This product contains caffeine and should not be used in combination with caffeine or stimulants from other sources. Discontinue use 2 weeks prior to surgery. Immediately discontinue use and contact a medical doctor if you experience any adverse reaction to this product. Do not use this product continuously for more than 8 weeks. Do not use if safety seal is broken or missing. Store in a cool dry place. KEEP OUT OF REACH OF CHILDREN. This product is sold by weight, not volume. Some settling of powder may occur during shipping and handling, which may affect density of powder. This product contains the servings indicated when measured exactly by weight.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Learn more about Citrulline.
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