C4 Extreme

C4 Extreme

Performance High Energy Pre Workout Powder*
No Artificial Dyes or Flavors, 200mg of Caffeine
9.8  out of 10  (21 Reviews)
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Product Overview

C4 Extreme
C4 Extreme Container

Performance Energy Evolved

Over two years in the making, spanning multiple formula tweaks and hundreds of flavor tests, C4® Extreme has been re-engineered and re-imagined from the ground up to help support explosive energy, extreme performance, powerful pumps, and mental alertness.* This is the product that defined a category, now evolved and updated.

We ran C4® Extreme through several hundred rounds of flavor sampling to make sure it exceeds every expectation, and we didn't settle for anything less than the best. If a flavor didn't measure up, we moved on. We're proud to say that C4® Extreme's flavor array wins in every way — including our new, naturally sweetened flavors.


Nitramax (NO3-C)™

Unlike Citrulline or Citrulline Malate, which work through a single mechanism, Nitramax™ supports two mechanisms of NO creation, the arginine pathway (eNOS) and the nitrate-nitrite conversion system, to help promote the ultimate pump.* Created by bonding citrulline with patented nitrates, Nitramax (NO3-C)™ is an advanced compound that delivers dual-pathway nitric oxide (NO) support.*

  • No Artificial Dyes.
  • No Artificial Flavors.
  • Fully Transparent Label.
  • No Proprietary Blends.
  • Innovative Ingredients.
  • Enhanced Formulas.

Introducing Project Clear Evolution: our mission to set a higher standard in sports nutrition. To elevate the entire C4® family—and beyond—by pioneering the next generation of premium, better-for-you performance supplements.

We're swapping artificial colors and flavors in favor of natural options, peeling back prop blends to showcase all the performance ingredients that make our products tick, and boosting our formulas with enhanced inputs for extreme performance.* This is the future of sports nutrition, and it starts with the all-new C4® Extreme.

Patented And Clinically Studied Ingredients

Caffeine Explosive Energy*

Caffeine anhydrous supports energy, mental alertness, and mental and physical performance.*

Carnosyn® Beta-Alanine Muscular Endurance*

This patented form of beta-alanine has been clinically shown to fight fatigue and improve muscular endurance.*

Nitramax (NO3-C)™ Citrulline Nitrate Nitric Oxide Booster*

Our exclusive dual pathway nitric oxide (NO) amplifier is formulated with patented nitrates to support better pumps and arc like lightning in your veins.*

NO3-T® Creatine Nitrate 2 in 1 Creatine & N.O. Booster*

This 2-in-1 performance and pump amplifier, both a creatine and NO booster, is formed when creatine is bonded with nitrates. Creatine Nitrate may help support strength, size, and pumps.*

Ratings & Reviews

Overall Rating
21 Ratings
Verified Buyer Rating
1 Ratings
Average Flavor Rating
7 Flavors
Top Rated Flavor
Naturally Sweetened Cherry Limeade
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Sep 06, 2019
  • 9 Icy Blue Razz

C4 Extreme Blue Raspberry Taste: Taste is awesome, they managed to get the same blue raz flavor in a product without all the additives Mix ability: No surprise here, no particles or anything after mixing. Also, sometimes I just toss a scoop in my mouth and no issue with that dissolving either. Price: Pretty much same price point as other Cellucor products which in my opinion are highly competitive. Effect: I like the 200mg of caffeine considering I've got a high tolerance for caffeine, you also get a good pump and go longer from the Beta Alanine and NO, and I always welcome creatine in my pre's. Overall: Another awesome product from cellucor, but without all the additives makes this my new go to for sure. Not a big fan of dyes and stuff being added to my pre's so this definitely puts this at the top

Sep 03, 2019
  • 10 Icy Blue Razz

Highly recommend this product if your looking for a strong pre workout that's great tasting and easy to mix. I'm a big fan that there is not any artificial dye or flavors.

Aug 29, 2019
Verified Buyer
  • 10 Icy Blue Razz

Great taste, easy to mix, energy, focus and no after crash. Great product!

Aug 25, 2019
  • 8 Icy Blue Razz

This preworkout didn’t disappoint! Nice steady release of energy, not too crazy tingling and no crash during or after the workout. Flavor was okay, not the best or worst. I usually supplement my preworkout with a pump product but with this one, it’s not needed

Aug 20, 2019
  • 10 Icy Blue Razz

Amazing product with an awesome profile and taste is spot on. HIGHLY recommend!!

Aug 20, 2019
  • 10 Icy Blue Razz

Where do I start?? I’ve been a longtime fan and user of Cellucor’s C4 preworkout and I was lucky enough to try their new C4 extreme and I’m very impressed! I noticed the flavor is a more light flavor and the coloring is lighter due to using natural ingredients. I took one scoop before the gym and I had one of my best workouts that have me some insane energy throughout. Even a few hours after I felt the energy. They got this product out of the park!!!

Aug 20, 2019
  • 10 Icy Blue Razz

Cellucor back with another great product. I love the C4 line and Extreme is no exception. The kick you get is fantastic, smooth and no real crash (at least for me). The icy blue razz doesnt taste chemically at all and provides a great workout.

Aug 20, 2019
  • 9 Icy Blue Razz

Really liked the added boost this gives to my workouts. Flavor is on point and no residue left once mixed. Again C4 does not disappoint.

Aug 18, 2019
  • 9 Icy Blue Razz

I received a 30 serving tub in the mail from Nutrabolt to try out and review and this is my honest feedback after using it a few times. I will be basing my review off a 10gm serving NOT the recommended 6.4 gm on the label. The reason for this is that I only use caffeine before I weight train and no other time of the day and honestly 200mg of caffeine is slightly on the low side when you train at 5 or 6 a.m. My big gripe about this PW is the word EXTREME plastered on the front label and let me tell you I have a lot of experience with pre's and supplements in general and there is NOTHING extreme about this ingredient profile. The big deal Nutrabolt is making about this version of C4 is the fact that they didn't use any artificial flavors or coloring and it's not a prop blend so the ingredients are disclosed but it's a weak profile so why the EXTREME ? The powder mixes very well with no foam and just a bit of sediment but really no mixing issues at all. The flavor which is a light refreshing blue raspberry with a hint of lemon at the end with no heavy overly sweet after taste is definitely enjoyable for anyone who likes blue raspberry. The energy at a 10gm dose hit's smoothly but there really isn't anything extreme about it and it just feels like a smooth kick of caffeine. There really isn't any crazy focus, mood boost, and pumps were definitely nothing to yell about so again where does the EXTREME come in. This PW in my opinion at 6.4gm delivering 200mg of caffeine is perfect for caffeine and stimulant sensitive people and that's how it should have been marketed because there are many people out there who are sensitive to caffeine and 200mg is perfect for them but the pump and performance on this is weak. This needs at least 3gm of L-Citrulline or 6gm of Citrulline Malate to work with the nitrates that are in this formula to deliver a better pump. In my opinion there are better options on the market for someone who is sensitive to caffeine where they won't have to add anything to the pre-workout for it to be more effective,

Aug 13, 2019
  • 10 Icy Blue Razz

I used this after a 4 week steam break. I am very happy with it and would highly recommend it. The profile is clean and straight forward, the taste is awesome, and the energy is great and lasting. You will not be disappointed.

Aug 13, 2019
  • 10 Icy Blue Razz
  • 10 Ultra Frost
  • 10 Naturally Sweetened Blueberry Lemonade

Solid product. Taste is phenomenal and the profile is nice and simple. Fully disclosed and natural flavors and no dyes. I'd imagine this would be Cellucor reacting to the trend whores who wanna be "all natural" and fully disclosed. Either way, the result is solid. Killer energy, pumps, and focus. Love this stuff!

Aug 12, 2019

I had the chance to try the new C4 Extreme after a very intense athletic event. On a week I was spent from the weekend I hit both a leg day and upper body day. The results were great. I had too very laser focused session that didn’t that over stimmed felling you can get. The Beta-Alanine hits just right to give you the endurance you need to power through. I definitely recommend giving it a try.

Aug 12, 2019
  • 9 Icy Blue Razz

I knew that something was different when I opened the container and the scoop was on top!!!! It has a light, fresh aroma that transfers to the taste when mixed with water. I used it in the gym, when pulling flood soaked carpeting and padding from a house and in a long, 2 day softball tournament in the blazing and humid Missouri summer swelter. Sure do like the fact that it is free of artificial dyes and flavors as well as those 'secret' proprietary blends. The Carnosyn dosage works well for me. Due to the extreme heat and humidity conditions, I lightened up the dosage as I was drinking incredible amounts of water those two days. It worked wonders. I was still hitting home runs in the last championship game at 5 PM as I was at the 8 AM game. Definitely recommend it for sports strength and endurance. Keep producing effective, high quality products, Cellucor!

Aug 10, 2019
  • 10 Icy Blue Razz

Cellucor does it again; flavor is on point and one scoop gives you a great burst of energy that lasts without any crash. I appreciate the transparency of the label and lack of proprietary blend, and I am glad Cellucor dropped artificial dyes and flavors for this product. Overall, and excellent product with a cleaner and more transparent label. Definitely worth a try!

Aug 07, 2019
  • 10 Icy Blue Razz

This new variation of Cellucor C4 surprised me because it dissolves great because it is such a finely ground powder, gave me a very smooth uptick in energy (no spike - no fall off a plateau), and the flavor is on point like always!

2 Sizes
30 Servings
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7 Flavors
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Price: $27.99  ($0.93 / Serving)
Flavor Rating: 10

What's in Cellucor C4 Extreme

Serving Size 6.5g (Appox. 1 level scoop)
Servings Per Container30
Amount Per Serving %DV
CarnoSyn® Beta-Alanine 2 g
Citrulline Nitrate [as NitraMax (NO3-C)™] 1 g
Creatine Nitrate (NO3-T®) 1 g
Caffeine (as Caffeine Anhydrous) 200 mg
N-Acetyl-L-Tyrosine 200 mg
Huperzine A [from Toothed Clubmoss (Huperzia serrata) Aerial Parts Extract 50 mcg
† Daily Value not established
Other Ingredients:
Citric Acid, Silicon Dioxide, Calcium Silicate, Malic Acid, Natural Flavors, Sucralose, Acesulfame Potassium.

Directions For C4 Extreme: Take one serving (approx. 1 level scoop) of C4® Extreme mixed with 6 fl. oz. of water, 20-30 minutes before training.

Warnings: THIS PRODUCT IS ONLY INTENDED FOR HEALTHY ADULTS, 18 Y E ARS OF AGE OR OLDER. Do not use if pregnant, nursing, currently taking PDE5 inhibitors or nitrates for chest pain. Before taking this product, consult a licensed, qualified, health care professional, especially 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. The density of the powder varies, and significant settling of powder may occur during shipping and handling. This product contains the servings indicated when measured by weight. Some individuals may experience a harmless tingling sensation, which is attributed Beta-Alanine. USE ONLY AS DIRECTED.

* 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.