C4 Ultimate

C4 Ultimate

The Ultimate Pre-Workout Experience
Fully-Loaded Formula in Single Scoop Dose
9.4 out of 10  (143 Reviews)
2 Sizes
20 Servings
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6 Flavors
Apple Berry
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Price: $39.99 ($2.00 / Serving)
Flavor Rating: 9.2

Product Overview

Cellucor C4 Ultimate Pre-Workout bottle image. Cellucor C4 Ultimate Pre-Workout bottle image.



C4 Ultimate

Ultimate isn’t just a code of conduct… It’s the pursuit to kick ass and take names in the gym. Your crushing hunger to reach your new PR is the very reason why we’ve spent the last few years engineering the most hard-hitting, intense, and focused pre-workout on the market–one that matches your obsession of being better than you were yesterday.*

C4 Ultimate is the most powerful C4 we’ve ever created. It’s not for the weak. It’s not for the weekend warrior. This is for those that don’t have limits in the gym. Those that aren’t afraid to work, sweat, and bleed for their next best. It’s dosed to the brim with the powerful ingredients that your body begs for. You will feel the explosive energy run through your veins as you prep for battle in the gym.*

This maxed-out formula also packs a heavy punch of nootropics, mood enhancers, pump amplifiers and endurance boosters to push you to your ultimate limit. C4 Ultimate will challenge you for one more rep, one more set, and to pick up that heavy dumbbell you’ve been thinking about for weeks.*

Ready to see what you're made of?

Are you ultimate?

prove it.
The Ultimate



Citrulline Malate




Carnosyn Beta Alanine


Super Compound Creatine Nitrate


Betaine Anhydrous


Caffeine for Explosive Energy*


Powerful blend of nootropics, including: zembrin®, alphasize® (alpha gpc), & huperzine a

Customize Your C4 Experience
Cellucor C4 Product Line
Cellucor C4 Original
C4 Original packs explosive energy, endurance, focus, and pumps all in one scoop.*
  •   Explosive Energy*
  •   Increased Endurance*
  •   Increased Focus*
  •   Increased Pumps*


C4 Ripped provides explosive energy and a cutting formula.*
  •   Explosive Energy*
  •   Creatine Free*
  •   5 Ingredients for Fat Loss*


Cellucor C4 Original
Cellucor C4 Ultimate
C4 Extreme Energy is for users looking for insane energy and incredible endurance and pumps.
  •   300mg of Caffeine + Teacrine®*
  •   3.2 of Carnosyn Beta Alanine*
  •   1g Creatine Nitrate (NO3-T®)*


C4 Zero is for users who want increased energy and endurance without Beta Alanine or Creatine.*
  •   3g of Citrulline Malate
  •   2g Instantized BCAAs
  •   Zero Tingles (Beta-Alanine)
  •   Zero Creatine


Cellucor C4 Original
Cellucor C4 Original
C4 Mass explosive energy and mass builder.*
  •   Explosive Energy*
  •   CreaCarb™ Blend for Mass*
  •   Unbelievable Muscle Pumps*
  •   Improve Strength*


C4 On The Go provides explosive energy and performance without the shaker.*
  •   Explosive Energy*
  •   Creatine Free*
  •   8 Calories, 2g Carbs, 0g Sugar*


Cellucor C4 Ultimate

Ratings & Reviews

Overall Rating
143 Ratings
Verified Buyer Rating
25 Ratings
Average Flavor Rating
6 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.
  • 9 Cherry Limeade
  • 8 Strawberry Watermelon
  • 10 Raspberry Lemonade
  • 9 Icy Blue Razz
  • 8 Apple Berry
  • 10 Orange Mango

I received a sample of both the orange mango and strawberry watermelon from cellucor. I just finished using stim free PMP and this puts those pumps to absolute shame. They were rock solid and I kept them for much longer. And coming from a stimulant break this was nice clean energy, hit hard but no adverse effects. My new go to preworkout for sure. Orange mango was by far my favorite flavor. Update: I have now tried all of the flavors, icy blue razz is really good, if you've had anything else icy blue razz you know what you are getting. The cherry limeade is also tastes the cn3 I had in the same flavor. It's very strong so I use more water but tastes really good.

  • 9 Apple Berry

C4 shot me some samples of a couple of their pre-workouts including a serving of ultimate so I just want to thank them first off. I really enjoyed the taste of this PWO because I haven't really had anything like it. If anybody has seen my other reviews they know I'm super tolerant to any kind of PWO and this is no exception. TO ME, this PWO was just like extreme energy in the sense that I mostly just got the crazy tingles and no significant boost in energy. As much as I hoped this thing would make me explode and wanna punch a wall, alas I was let down lol. I wasn't really expecting anything crazy seeing as though every other PWO I've tried hasn't had much of an effect on me. I guess I can call it quits on taking PWO because my body is just naturally tolerant to all this stuff including caffeine which seems to also have no effect on me. Mixability 10/10: Mixed in blender bottle with 10z of cold water and had no problems whatsoever. Taste 9/10: I really enjoyed this flavor because I've never tried anything like it since I'm new to the supplement field. I definitely recommend it! Overall i'll give it a 7/10 because of the flavor :). Now i know PWO is not for me, I'll stick to the badass music to get me pumped up! Thanks again to the C4 team for giving me a chance to try out a couple of their pre workouts! Good people!

Verified Buyer
  • 10 Strawberry Watermelon
  • 10 Raspberry Lemonade
  • 10 Apple Berry

I have tried many different kinds of C4s with Cellucor during the past few years and I must say this is by far the best pre-workout they have ever created! When I tried this product for the first time I could not believe the energy, focus, strength and muscle pumps I experienced. I have tried the Strawberry Watermelon, Apple Berry and Raspberry Lemonade flavors. They are very delicious, tasty and refreshing. Reminded me of Jolly Ranchers and other flavor like candies. I have used 10-11 oz. of water in my shaker with only 1 scoop. In a few quick secs. the water mixed very well with the powder. With just a few sips in 5-10 mins. I could already feel the energy and focus kicking in. There was not one moment when I felt exhausted during my workout and my resting periods were a lot shorter than before. Did not experience any crash or exhaustion after my workouts. The strength and muscle pumps were terrific. I was able to perform 1-3 extra more reps in most of my exercises. Even when I was done with my sets I was eager to do more. I could not stop and wanted to keep going. The muscles pumps I had were very full and skin tightening. I would be warming up towards my working sets and could already feel the pumps getting fuller and tighter quickly which I liked a lot. Overall, I had a terrific experience with this product and would purchase it again. I look forward to trying out the other different flavors!

  • 8 Apple Berry
  • 8 Strawberry Watermelon
  • 8 Raspberry Lemonade
  • 9 Orange Mango

So Cellucor shot some samples of the soon to be released C4 Ultimate, both the Orange Mango and Strawberry Watermelon flavors. This new formula is looking amazing to me, the solid and doses and a nice caffeine load at 300mg which is double the older formula which was only pulling in at 150mg per scoop. Now I am one big stimm junkie, the old formula was always a 2 scooper for me, and I would drop a 200mg caffeine pill along with it. I always have been one to take a lot of caffeine so I decided for this new formula I wouldn’t mess around and would do both samples back to back for a double dose before getting into training. Given the formula is pretty rock solid I decided to forgo stacking it with any stimm free options; I love that it has Glycerol, Niacin, Cit Mal, and Beta Alanine in it since I respond very well to all of those. So how do they taste though? Orange Mango- Went with this one first since I love the flavor combo and Cellucor is nothing short of fantastic on their flavorings (make some **** water flavor packs already!). The orange is the slightly dominant taste here, with mango riding shotgun to give about a 60/40 flavor split, it is sweet but not over whelming and makes you feel like you’re on a nice beach sipping on a tropical drink. Bliss is the only description I have, it is so good you never want it to end, it is a nice and refreshing taste that gets you all set to rip the weights! [B]Orange Mango- 9/10[/B] Strawberry Watermelon- A classic combo here, and one that is no stranger to C4; they have done both strawberry kiwi and strawberry margarita, and also a watermelon. This lives up to those standards, a candy-ish sweetness with a more prominent strawberry taste to it, very delicious if you like the sweeter taste to your pre-workout. [B]Strawberry Watermelon- 8/10[/B] Mixability- Just a few shakes was all it took to dissolve most of it with minimal settling which was something I expected since each dose has 1.5g of creatine nitrate which never fully goes away; there were also some floaters which was also expected from the Glycerol (I actually like these, they add a nice… texture? To the drink IMO). Outside of that there was no issues at all and as always it only took a quick swirl with the last sip to get it all down. [B]Mixability- 6.5/10[/B] Effectiveness- Like I said, I did both samples, 2 scoops total, back to back. So 600mg of caffeine, This is about my average for pre-workout (450-750mg for the curious). So the energy I got was right on par with what I like, it was steady and kept up the whole 1.5 hour session, ~1 hour weights and 30 minutes light cardio. I felt no jitters, no crash either, just a smooth build up and slow come down. One thing C4 always has done for me is the focus, it really gets me in the zone; this was no exception. It locked me in like a heat seeking missile to the iron and made pounding each set no problem. I could not wait to keep going rep after rep, this was aided by the great pump too. Like I said, Glycerol and me, we got a thing. I love it and at this dose, along with the other goodies in C4, I felt like I was ready to just blow out of my skin. The pump may not be ‘needed’ but it is a great feeling and helps with the mental motivation for me. I also loved the little Beta Alanine tingles and a bit of the Niacin flush I got; they all just make me ‘feel’ that much better as I lift and that keeps me tearing it up. [B]Effectiveness- 9.5/10[/B] All in all this is what I always wanted from the older C4, more caffeine to go with the great profile, this is C4 Ultimate! This is the C4 you need if you, like me, love your stimms; whether one scoop or double downing like me, it hits like a truck, locks you in, and gets you ready in a way that is nothing short of incredible. Top it off with skin bursting pumps, and unmatched flavor and this really is the next step up for C4. Normally I would be stacking a stimm free pump product with my pre, but there would be o need with this, the doses are great and it is an all-in-one that I must admit is top tier; no other pre-workout really has felt like such a complete package to me. Add in some 1,3 DMAA and I may go to the moon on this stuff! Raspberry Lemonade- I was really excited to have this flavor, especially given it has been a 100+ degrees out lately, stupid heat wave. It definitely hit the spot though, very refreshing and slightly tart from the lemonade aspect making it a great flavor for summer. Though the Raspberry is a bit lost in that it tastes more like a generic ‘Berry’ taste more than anything it is still delicious; if they did not specify raspberry on the label I would not be able to off-hand pick that as the flavor. I would compare this to the Raspberry Lemonade Crystal Light but with a slightly more sweet flavor, making it have a bit less ‘bite’ to the tartness, so you get the lemonade feel but it is not too overbearing, keeping the flavor well balanced.

  • 10 Apple Berry
  • 10 Raspberry Lemonade

Flavor: Apple Berry and Raspberry Lemonade. 10/10 - I don't give out 10s much unless but the flavors are amazing. Extra: I have extensive research on Cellucors C4 product line from C4 Extreme, Mass, Ripped, 50x, On the Go, etc now up until Ultimate. C4 Ultimates flavor testing was superb and these flavors are in my top 5 flavors from this brand and product!!! Flavor was amazing, I used a serving scoop in about 8oz of water mixed with crushed ice. I am a huge fan of Cellucors C4 line and this doesn't fail me too the least. C4 mixes well with products from Cellucor but be careful to read the ingredients because too much isn't good. Mixability: 10/10 - no issues at all, no extra flakes give it a good shake and you're good to go. Overall: First off thank you Cellucor for making another excellent product, C4 products work tremendously. Not even that the flavor is a great starting point as well as it tastes amazing. But we are all here for the gainz and getting the boost necessary and routines in, I give this product a thumbs up!!! More Extras: ATP is a source of energy our body created, the more ATP the more our body can do. I won't be going into complete detail as I have learned all about ATP, energy systems, etc in College however one thing I found great about the C4 ULTIMATE is that you won't feel any crash after training/workout. I felt the boost and noticed my training/workout lasted longer than normal. I could've gone even more, and it's hard to find a naturally perfect balance of ingredients in an energy booster, not only does it boost ATP/Energy within the body, the ingredients are a perfect mixture, plus no crash which is what we all need.

What's in Cellucor C4 Ultimate

Serving Size: 1 Scoop (19g)
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) 36 mg 4%
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), Velvet Bean (Mucuna pruriens) seed extract (standardized for L-Dopa), Theacrine (as TeaCrine®), AlphaSize® A-GPC (Alpha-Glyceryl Phosphoryl Choline), Zembrin® (Sceletium Tortuosum) aerial parts extract, Rauwolfia vomitoria root bark extract, Huperzine A (from Toothed Clubmoss (Huperzia serrata) aerial parts extract)
** Percent Daily Values (%DV) are based on a 2,000 calorie diet.
† Daily Value not established.
Other Ingredients:
Natural & Artificial Flavors, Calcium Silicate, Silicon Dioxide, Sucralose, Acesulfame Potassium, FD&C Red #40, FD&C Blue #1.

Directions For C4 Ultimate: 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.