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Cellucor C4 Review - 14 Things You Need to Know

Cellucor C4 is one of the leading pre-workouts, but does it work? We followed the research and looked at the ingredients, side effects, and clinical studies. Can Cellucor C4 be the supplement that gives you the pre-workout energy that enables you to meet all of your workout goals?

Our research team wanted to know if Cellucor C4 can help achieve high workout goals with its key ingredients, such as carnosyn beta-alanine, creatine nitrate, caffeine, and arginine AKG. The team studied the benefits of the ingredients and the research backing the claims. Finally, we compiled our research into the bottom line.

Cellucor C4 can be purchased through their Official Site.

Cellucor C4 Readers: Noom is offering our readers a risk-free trial, for a limited time. Click here for more information!

What is Cellucor C4?

C4 Sport Cellucor claims to be the number #1 energy and performance booster used by athletes and bodybuilders. Supposedly they consider themselves #1 because of  100% effectiveness in improving the performance and overall efficiency of exercises, workouts, and other physical-related activities, but this is what the research has to say:

cellucor c4 for workouts

It is also easy to use, with only one scoop of powder, it is safe and with research-proven validity of its effectiveness. What’s more, it can be found practically anywhere, in any of its presentations, including Cellucor C4 Ultimate, GNC Cellucor C4, and more.

The effectiveness of the product is all due to the high-quality, natural, and highly active ingredients, which we can find Theacrine, Beta-Alanine, Creatine Nitrate, and Arginine AAKG, plus other vitamins and minerals for a superb performance-oriented result.

Cellucor C4 Competitors

Advocare Spark
C4 Ripped
When Did Cellucor C4 Start

When Did Cellucor C4 Start?

Cellucor is a supplement-oriented brand that was founded in 2002 by the nutritional science company Nutribolt. Since its foundation, it has brought many pre and post-workout supplements to the market. Including Cellucor C4 Extreme Workout, Cellucor Whey Protein Powder, Cellucor SuperHD, XTEND, and even an anabolic supplement called P6 Black, plus many others especially leaning towards a performance improvement for athletes and bodybuilders.

The Cellucor C4 Pre-Workout supplement was launched alongside other supplements in 2014, and since the moment it was released, it became one of the highest-ranked products on the market. Nowadays, C4 Sport Cellucor is one of the most recommended products by bodybuilders and athletes thanks to its surprising results in promoting energy boosts and improving the transformation of muscles and more. Cellucor earned an “A+” with the BBB.

Cellucor C4 Customer service Contact Information

  • Phone: 866. 927. 9686
  • Email: support@cellucor.com and support@c4energy.com
  • Address: 3891 S Traditions Dr Bryan, TX 77807-7595

Cellucor C4 Refund Policy

Cellucor has a 60-day 100% satisfaction guarantee for C4 and Cellucor products.


Types of Cellucor C4

From the Cellucor C4 official website, you can find various presentations and flavors for the supplement. All of these flavors and different presentations are the same product, just changing one or another feature non-related to the benefits, effectiveness, or the supplement.

On the website, you can find the following flavors of Cellucor C4 Pre-Workout:

  • Orange Burst
  • Fruit Punch
  • Cherry Limeade
  • Ice Blue Razz
  • Watermelon
  • Pink Lemonade
  • Strawberry Margarita

cellucor c4 pink lemonade flavor

All these flavors are available for both the Cellucor C4 30 Servings presentation starting at $29.99 and the C4 Cellucor 60 servings presentations at $49.99.

There is also the Cellucor C4 Ultimate version, the Cellucor C4 Ripped, Cellucor C4 Extreme Pre-Workout formula, C4 Dynasty, and the Cellucor C4 Sport Pre-Workout. These also offer different flavors and presentations, including the Cellucor C4 30 servings and the Cellucor C4 60 servings.


Cellucor C4 Ingredients

There are a few ingredients that compose Cellucor C4. The product has both individual ingredients and an “Explosive Blend,” providing results and benefits for the performance and overall response for muscles, a cognitive system, and even some organs.


One of the main ingredients, Beta-Alanine, is an amino acid that increases muscular levels of carnosine, promoting fatigue resistance. It comes in a 1.6 gram per Cellucor C4 scoop.

Creatine Nitrate

cellucor c4 ingredients creatine

Creatine nitrate, another main ingredient of the supplement, improves strength, power, and resistance during exercises. It provides water retention in muscles, making them more likely to support weight training for long hours, getting excellent post-workout effects as well, as stated in this research in the journal Nutrients.

L-Arginine AAKG

L-Arginine AAKG is a compound that can be found in the supplement as well, which enhances body functions like blood flow, muscle oxygenation, and increases nitric oxide levels for more efficient nutrient delivery throughout the body. And of course, it also helps to promote more resistance and concentration during anaerobic and weight exercise.

Caffeine Anhydrous

Caffeine Anhydrous, a main ingredient of the product, can also have improvements in the body and mind, according to the Journal of the International Society of Sports Nutrition. As a caffeine low in water, it is specially designed to provide a much faster effect on humans. According to research in the Journal of Strength and Conditioning Research, it helps to increase performance, strength, and concentration.

Tyrosine and Theacrine

Tyrosine and Theacrine can also be found inside Cellucor C4, an amino acid that improves neuromuscular performance. When they are combined with caffeine, the supplement works even more efficiently, providing synergistic effects that increase the fatigue resistance, more focus, and an active release of adrenaline for a more extended work out activity.

cellucor c4 claims explosive energy

Explosive Energy Blend

On the other hand, we have the famous “Explosive Energy Blend,” which is supposed to come from six ingredients, like niacin, vitamin c, folic acid, mucuna pruriens, and vitamin B12. This blend helps to improve blood flow and dilate blood vessels. It will also convert dopamine into energy, and release stress for better heart rate performance, promotes a better recovering phase after workouts, enhances energy and resistance, offers more brain capacity for focus, and eventually makes the nervous system work more efficiently, improving concentration.


How to Use Cellucor C4

The proper way of using it is by taking one scoop of the Cellucor C4 mixed with water 30 minutes before training.

For those who need a performance boost, it is recommended to take an additional scoop mixed with water before or during training. However, it is recommended not to exceed this intake.

Apart from that, the product indicates that taking a lot of water before, during, and after workouts with Cellucor C4 can improve performance even more. Other Cellucor products like Alpha Amino can increase the effects of the supplement even more.


Cellucor C4 Benefits

Whether you use the Cellucor C4 50x version or the simple Cellucor C4 blue razz original formula, there’s no doubt it can provide excellent results.

Despite this Cellucor C4 Sport review and many others, no real research validates the benefits and results of the product advertisements. However, many other research studies to prove the benefits of Cellucor C4 ingredients, including TheaCrine, L-arginine AAKG, Caffeine Anhydrous, Tyrosine, Beta-Alanine, and creatine hydrate.

On one study for the TeaCrine (Theacrine), it was concluded that the product helped athletes to improve concentration, energy, and focus on a lapse of 2 to 3 hours. Also, it boosted the willingness to exercise and motivation while reducing fatigue with no side effects or health problems.

cellucor c4 may improve cognition

Another study made on 21 military cadets using Tyrosine during a week of training delivered excellent results on task performance, reducing stress, improving resistance, and promoting anti-fatigue hormones for a much more efficient production both in cognitive and physical events.

For the arginine AAKG, there is research that concluded the product was not effective in improving muscular performance, as published in the Journal of the International Society of Sports Nutrition. However, there is another one in Advances in Medical Sciences that proves the effects of the product on college athletes, finding excellent results for recovering from injuries and a slight increase in performance in training.

For beta-alanine, research published in Nutrition Research was done to analyze the results and effectiveness of the product on men and women during exercise. It concluded that the product does help in reducing fatigue and providing more resistance to physical stress by augmenting muscle carnosine.

We can also find Tyrosine in the supplement. This compound is said to promote memory and multitasking performance, a useful feature for exercise and other physical-related activities, according to Pharmacology, Biochemistry, and Behavior.

Lastly, we have the results of a study for creatine nitrate, where it was approved and validated by athletes that the product improved physical performance exponentially. In the long run, it promoted muscle growth and better resistance, according to the Journal of Strength and Conditioning Research.

Side Effects

Cellucor C4 Side Effects

The different types of Cellucor C4 gave incredible improvements in performance, strength, and resistance. However, the product is not exempt from side effects. Despite not having any studies disapproving of the product with highly dangerous side effects, there are some of its ingredients that could make you hesitant to buy this supplement.

For example, arginine is said to cause diarrhea and other problems in the whole gastrointestinal system. However, it was mostly due to overuse or poorly digested amino acids with arginine, suggests research in the Journal of Nutrition.

Tyrosine, another ingredient of the supplement, can also induce specific side effects like stomach irritation, migraine, gastric problems, and nervousness, according to PubChem. This happens due to the mental impact the product has, especially when it is ingested incorrectly or it is overused.

cellucor c4 potential side effects

But despite these side effects, some studies approved other ingredients, like arginine, as totally safe for the circulatory system, says the International Journal of Sports Nutrition and Metabolism.

Then we have TeaCrine, or in its compound form, Theacrine. It was studied for eight weeks. It gave safe results that make it one of the healthiest and highly active ingredients of the supplement, according to the Journal of the International Society of Sports Nutrition.

Caffeine, a popular ingredient in products like Cellucor C4, comes with the risk of side effects like increased heart rate, elevated blood pressure, jitters, and sleeplessness.

Apart from that, it is essential to remember that GNC Cellucor C4 is a product that blends and mixes many ingredients simultaneously. So, if single products by themselves do not dangerously affect health, it is still possible that all these ingredients together, as in the supplement, could damage body functions. This is all because there is a lack of evidence from scientific studies directly related to the product Cellucor C4 side effects.

The Science

Cellucor C4 Scientific Research

As you may already know, Cellucor C4 50x or any of its other presentations like Cellucor C4 Blue icy razz, provide excellent results for performance, strength, and resistance. But it doesn’t have any research validating these effects or consequences, especially when it comes to studies directly related to the supplement.

As for its ingredients, there are various affirmations and research that could prove how the product works. For example, there is one study in the Journal of Caffeine Research that analyzes how Theacrine and caffeine together can improve specific human capacities. It came with results about the increase of performance and how they both were safe. However, it didn’t give any boost to cognitive performance. Still, it delivered some changes in mood and energy, in addition to the other physical effects, according to additional research in the journal Nutrients.

Additional research in JISSN also studied the effects of anhydrous caffeine, analyzing several subjects to see if the intake of this compound could improve the performance or any other physical feature, before, after, or during exercise. As an ergogenic, this type of caffeine boosts energy, especially for long and intense workouts. However, it didn’t improve the strength or power in weight exercises or sprints.


Cellucor C4 Alternatives

cellucor c4 alternatives

There are some products like Cellucor C4 that could be perfect substitutes. These products are merchandised the same way as Cellucor C4 blue razz, offering the same results and safety benefits.

Among these products, we can find MuscleTech Nanovapor, which promotes excellent concentration and focus improvements, plus superb strength enhancement and much more energy for longer and faster training performance. Also, it helps to grow muscle better than Cellucor C4. However, there is little to no research validating these claims.

Another option could be SAN Fierce Domination, a product that also works well to improve efficiency and strength. It promotes muscle growth and provides excellent gains after workouts. Also, it enhances resistance and endurance.


The Cellucor C4 Extreme DMAA class action lawsuit is brought on behalf of all persons in the United States who purchased C4 Extreme at any time during the past four years. It is seeking damages and injunctive relief necessary to disgorge and/or restore monies received by defendants as a result of their alleged deceptive conduct.

A proposed class-action recently removed to federal court in California details allegations that defendant Woodbolt Distribution, LLC, which does business as Nutrabolt, misleadingly packages and sells its Cellucor C4 Pre-Workout powders.

In November 2018, a class-action lawsuit was filed against Woodbolt Nutrition for allegedly deceptively using slack-filled packaging for Cellucor C4 Pre-Workout powders. Specifically, the complaint alleges that the 30-serving container has 66.6% empty space and the 60-serving container has approximately 45% empty space.

There is also a Federal class-action lawsuit filed against Cellucor due to its safety of ingredients.

What Users Are Saying

What Users Are Saying

“I tried this as a pre-workout to replace NO Xplode, but found it quite disappointing. Just didn’t get the pump or physical and mental stimulation I was hoping for. Examining the ingredients list, and the amounts of those ingredients, I discovered that C4 has far less of the potent supplements included in NO Xplode so I guess I shouldn’t be surprised the effects are significantly less.”

“I love C4 Ripped. It has helped me out with exercise and my diet. Definitely recommend, I’m pretty sure it’s helping me cut fat. It’s not thick at all, easy to drink!”

“C4 Ultimate is great and doesn’t give me jitters or make me sweat while doing nothing. It does however give me that energy to go two hours at the gym easily.”

Bottom Line

The Bottom Line on Cellucor C4?

So, will Cellucor C4 pre-workout provide explosive energy? We like that it contains a few natural ingredients and that the company is a trusted name in the industry. But,
the only concern was the few reviews mentioning the effectiveness. Based on the profile, available research, and positive testimonials, we see think this one is a winner.

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Plus, with no restrictive dieting, we’re all for using Noom as part of the free trial offer available to Dietspotlight readers.

Learn More About Noom »
Cellucor C4 Review
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Cellucor C4

What are the side effects of Cellucor C4?

Cellucor C4 side effects, as reported by some users, may include mild headache.

What are the ingredients in Cellucor C4?

C4 pre-workout contains CarnoSyn, Beta-Alanine, Creatine Nitrate (NO3-T), Caffeine and Arginine AKG.

How much caffeine is in a scoop of C4?

C4 caffeine content per scoop varies according to the specific product: Cellucor C4 Extreme contains 200mg, Sport contains 135mg, Ripped contains 135mg, C4 Original contains 150mg Caffeine and Ultimate contains 300mg.

Does Cellucor C4 Work?

Though some users have reported success with Cellucor C4, it is a pre-workout drink powder so it won’t necessarily promote muscle growth. Creatine has been studied and it can hydrate muscles for faster recovery.

How much does Cellucor C4 cost?

Cellucor C4 is available from $29.99 to $39.99.

Where can I buy Cellucor C4?

Cellucor C4 can be purchased using their Official Site.

How many calories are in a scoop of C4?

One scoop of C4 contains zero calories.

Do I have to have a blender to mix Cellucor C4?

While having a blender will ensure the drink mixes well, it is also possible to mix the drink with a shaker cup.

Should I cycle Cellucor C4?

It is recommended you use the product for up to eight weeks, then discontinue for 2 to 4 weeks.

Why does my skin feel weird after using Cellucor C4?

The beta alanine amino acid may cause itching and tingling about 10 to 20 minutes after using the product.

What is C4?

C4 is potent training supplement that is named for a powerful plastic explosive used by the United States Armed Forces.

Is C4 considered a steroid?

C4 is not a steroid.

How much C4 PRE-WORKOUT should I take?

Before exercising, take 1 scoop of C4. Do not consume more than 2 scoops per day.

What are the ingredients in C4 PRE-WORKOUT?

C4 PRE-WORKOUT contains CarnoSyn, Beta-Alanine, Creatine Nitrate (NO3-T), Caffeine, and Arginine AKG.

45 Cellucor C4 Reviews

  • Sam

    Hi i have been taking these for past 5 days but im not experiencing any explosive energy …and i do lift the same weights and the same rep .I correctly take this 20-30 mins before my workout . Why is not working ?

    • Anna (Editor)

      Hello. All users are different and can experience different weight-loss results.

  • Victoria (Editor)

    Hello Zia. All users are different and can experience different side effects; please make sure to consult with your physician before taking this product.

  • Gurkirat

    Im 16 year old boy, can i use it?

    • Your Name

      Im 16 and c4 helps me very good it increases my strength im very focus and My energy level is beyond what i thought it was try it

      • Summer (Editor)

        C4 is not suggested for use by anyone 16 years of age. You may want to talk with your doctor before you take this.

  • Wayne

    I’ve taken C4 for 3 days now and I can feel a big difference. I work out and I sweat allot. I play football. I’m small but big but I wanna get want to get bigger. How long do you have to take C4 until you can see a difference in your body?

    • Anna (Editor)

      Hello. All users are different and can experience different weight-loss results, but exercise in conjunction with a healthy diet and supplements, like Dietspotlight Burn, have shown to help with weight-loss.

  • Luke

    Take two scoops if you want to punch yourself in the face and run around in circles. ?

  • Summer (Editor)

    Thank you for your input on this reaction, but if there is any potential for an allergic reaction we think it best to talk with a doctor.

  • Veronica

    Hello Sajid. All users are different and can experience different side effects; please make sure to consult with your physician and let them know about the side effects you were experiencing.

  • J.Mendez

    I have been using this product for about 3 months. Gives me that extra energy to workout after work.

  • joe

    shared this experience, came and went numerous times through the day

  • Jose A.

    It has a stim effect to it your supposed to feel that you will feel it less if your actually working out hard

  • Bryan

    I bought C4 today at my gym, I think I did a little bit more scoop then I was supposed to but it really worked. Was doing back and shoulder for 2 & half hours usually I’ll last for an hour and half. Felt great.

    • Kelly

      I love this product.. the taste not so great lol but worth it for the intense workout I get in the morning.

  • Cal calington

    C4 has a major effect on anyone who works out. It gives you a warm feeling, then a boost in heart rate a bit and blood flow. This stuff works.

  • Susan

    I am a 53 year old woman and I just started going to the gym. C4 has made a big difference! I am over weight so I thought working out was going to kill me . C4 gives me that extra little something that makes me feel like I am actually getting in a productive workout! Love this stuff!

  • Nichole

    I like C4… I been using it for a year now. I use it for my circuit training and regular workouts and I get a lot of energy and strength. It helped me stay motivated. I use to be 198 and I’m down to 145. I also use it when I’m tired and need energy to focus on my school assignments.. It wakes me up and keeps me focused.

  • Dawn

    I’ve not experienced any jitters or ill effects due to the caffeine, but I have found that it works very well with me. I’ve just used it this week alone, and my performance is 50% better. I can breathe better during the workout, my endurance has improved and I feel really good after the workout. It’s been so long since i’ve had muscle soreness due to harder efforts, which I have now. I wanted to better understand what ingredients are in the C4. I am more concerned with how long will this product really last, or is this just working because it’s new to my system. How will it work over a period of time?. Do you have any idea where I can find these answers.

  • Samay

    It is boosting my energy .. I can feel it but don’t know why I hav been hAving headache after workout …I feel like a heavy weight is in my head ….should I continue it or leave it??? I just started taking it for 3 days n since de 1st day itself I m having headache???? What should I do?????

    • Adrian (Editor)

      Hello Samy. All users are different and can experience different results; please make sure to consult with your physician before continuing this product to make sure its safe and effective for you to use.

    • marc

      you need to hydrate yourself bro

  • John doe

    c4 is a great product for gym use work use and sports use in the gym after taking it for about 9 days my pumps at the gym were unreal better than I have ever had with any other product I don’t know why everybody is complaining about the taste it’s actually better than most I’ve had alot of good flavors to choose from be sure to drink plenty of water as you take this as well

    • Dave

      I use it because it is one that actually tastes good! Strawberry Margaritta is great.

  • Why I had headache taking this ?
    gagandeep (Verified Purchase)

    After having 3 days ,i felt no pump..my nutrition expert said take 2 scoop…n after taking 2 scoops for 2 days, i felt high voltage headache…i thought its might be by so much crowd in the gym..and next 2 days again same story
    Happened, i was shocked…now i stop the c4…can anyone reveal the reason behind??? thanks

    • Devon (Editor)

      Some dieters experienced the same. The only thing you can hope for is if 1). your body accustoms itself to the formula, 2). you reduce your dosage until the effects subside or 3). continue to exercise to increase healthy blood follow.

  • How first timer should use this ?
    Bert de Guzman (Verified Purchase)

    In my first used this c4 pre workout i drink full scoop & in the miidde of my workout i feel headache and i decided to stop because this is not normal to me. Can you give me some recommendation or either suggestion on how to use it for the first timer? But i like this stuff..

    • Stephen (Editor)

      Bert, the company recommends taking one serving with 4 to 6 ounces of water 20 to 30 minutes before a workout. After finding the amount that suits you, you may add scoops. Do not exceed two servings in a 24-hour period.

      • Cal calington

        Finally a editor that actually reads the c4 label

  • this stuff really works
    Melissa (Verified Purchase)

    I just want to say that this stuff really works! Not the best taste in the world, but thanks to this amazing product, I have the boost and energy I need after a long day at work. Before C4, it would take me 45 minutes to walk/run a 5K Marathon. I have been taking C4 for four months now, and I’m so happy to share that I am now running at a perfect pace and breaking my own personal record of a 5K Marathon in 30 minutes. I also want to share to others, that do not give up on this product. The first week of taking C4, I almost gave up on it because of the tingly “wired” effects I was feeling throughout my body, so what I did the second week, was use only half a scoop to the same amount of water….and this did it for me! I am one happy user! 🙂

    • Carmela

      Do you notice any increase in your weight or body growth? I read some comments that says it helps with growth. I don’t wanna get bigger

      • Rob

        Carmela You only Gain Muscle through excess calories.

        • Summer (Editor)

          Hi Rob. We’re positive gaining muscle is not solely dependent on eating an excessive amount of calories. Macronutrients, especially carbohydrates and protein, play an important role, but eating too much can lead to weight gain.

          • Sid

            Plz don’t buy c4 you wont be able to sleep at night

      • Cal calington

        It helps muscle growth if you do weights. It increases how much cardio you can do if you do that.

    • Lorraine

      My husband start taking this and it does work, but now, he has a side affect of breaking out in hives and swollen face once he exert himself. It seems as if the c4 is still in his system even after the five years of not taking it.

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