C4 Ultimate: Cellucor’s Pinnacle Pre Workout!

Cellucor C4 Ultimate

C4 Ultimate represents the ultimate pre workout experience from industry heavyweight Cellucor that features a mostly transparent label and well-dosed ergogenics.

For years, customers have asked for it, and now it’s finally here. A decked out version of Cellucor’s C4 pre workout… with some serious ingredient doses.

The rumor mill has been ablaze with whispers of a brand new version of Cellucor’s best selling pre-workout supplement, C4. The new version was promised to be more transparent and full-dosed, and for the most part, it is.

Today, we’re delving into Cellucor C4 Ultimate, a pre workout that hits just about all the right notes on the energy, focus, performance, pump, and endurance scale.

The breakdown is just ahead, but first, take a moment to check the best deal and sign up for alerts from PricePlow:

Cellucor C4 Ultimate – Deals and Price Drop Alerts

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C4 Ultimate Ingredients

C4 Ultimate is a tale of two labels, the ergogenics are transparently dosed while the energy and focus blend is proprietary. However, it’s the energy blend where things are the most intriguing as it borrows pieces from Cellucor’s focus-heavy pre workout C4 Neuro.

  • Citrulline Malate (6g)

    Cellucor C4 Ultimate Ingredients

    C4 Ultimate is the most robust and decked out version of C4 yet feature several extremely well dosed ergogenics.

    C4 Ultimate isn’t screwing around as they start off with a hefty 6g dose of citrulline malate. A combination of L-Citrulline and Malic Acid, citrulline malate is an incredibly powerful nitric oxide (N.O.) booster that is vastly superior to L-Arginine due to its enhanced bioavailability in the body.[1]

    Citrulline Malate increases circulation, vasodilation, and most important of all PUMPS! Furthermore, increased circulation means more blood and nutrients are supplied to your muscles enabling them to function at greater output throughout your workouts. Lastly, Citrulline Malate also supports ATP production, helping you to perform more work and speed intra set recovery.[2,3,4]

  • CarnoSyn Beta Alanine (3.2g)

    Much like all previous iterations of C4, C4 Ultimate contains the all-time endurance booster, beta alanine. BA helps increase serum carnosine levels in the body which ramps up the body’s ability to buffer lactic acid and help offset the “burn” that sets in during extended working sets.[5]

    Beta alanine’s buffering ability leads to better endurance, greater power, strength, and less fatigue.[6,7,8]

    As you’ve likely noticed, you’ll get the full clinically-studied dose of 3.2g if you full scoop. So watch out though if you do go full-bore with that scoop — you might be in store for a serious case of tingles! Most C4 fans are used to this and rather enjoy it, but C4 Ultimate’s tingles may take it to the next level!

  • Creatine Nitrate NO3-T (1.5g)


    Cellucor / Nutrabolt is legally licensing this ingredient from ThermoLife International

    NO3-T is the ThermoLife-patented version of creatine nitrate. Each gram contains 67.5% creatine and 32.5% nitrate, meaning you’ll get 1012mg of creatine in each serving of C4 Ultimate. This won’t meet your daily 3-5g of creatine, but that’s not why it’s here.

    We’re more interested in the 487.5mg of nitrate which helps sustain the nitric oxide boost we got at the start with Citrulline Malate. Nitrates will help improve blood flow, endurance, power, and most importantly pumps![9,10,11]

    This is a great dose, and it will last a very long time. Cellucor’s always had creatine nitrate in their products, but we don’t think it was ever this much.

  • Betaine Anhydrous (1.5g)

    The next ergogenic contained in C4 Ultimate is the power and strength booster Betaine Anhydrous. You’ll also see it displayed sometimes as trimethylglycine or TMG for short. Betaine is a muscle building compound derived from sugar beets.

    Betaine significantly increases in strength, power, and endurance, while also alleviating soreness — but unfortunately we can only make those claims at 2.5g, not 1.5g.[12,13,14] There will still be benefits, but if you want to replicate what’s in the 2.5g studies, you’d have to add another gram.

    One last benefit of betaine is that it synergizes with creatine to enhance the body’s natural synthesis of the powerful ergogenic.[15]

  • Nitrosigine (1.5g)

    Nitrosigine Arginine Inositol Silicate

    Not only does Nitrosigine immediately boost N.O. levels, it keeps them elevated for a period of up to 2 weeks!
    Image courtesy of NitroSigine.com

    Two well-dosed pump ingredients weren’t enough – there’s more!

    Nitrosigine is a novel form of the age old N.O. booster, arginine, developed by Nutrition21. This new-age arginine is bonded to silicate to increase its bioavailability.

    The landmark 2014 study using the ingredient noted nitric oxide levels were immediately boosted after taking it. But what’s really incredible is that Nitrosigine increased baseline nitric oxide levels, meaning it keeps N.O. levels elevated for a period of up to two weeks and could potentially lead to further long term benefits.[16]

  • Arginine Alpha Ketoglutarate (1g)

    Not done with the pumps yet!

    For a long time, Arginine AKG (AAKG) was a primetime pump ingredient in many pre workouts, but it has fallen by the wayside in favor of other more effective pump inducers like Citrulline and Nitrosigine.

    You’re probably wondering why it’s included in C4 Ultimate then? Well, as it turns out, arginine synergizes with nitrates to reduce nitrate tolerance.[17] This means your body won’t get “used” to the effects of nitrates and feel the need to constantly up the dosed, as many do with caffeine.

  • Taurine (1g)

    Cellucor C4 Ultimate Tester

    Cellucor has sent out some “tester” packets to some of their insiders for advanced testing and to get early feedback on the ultimate C4! Subscribe to our YouTube channel to see our impressions!

    Taurine is a conditionally essential amino acid that functions as a cell volumizer in skeletal muscle which supports muscle fullness, endurance, and “water-based” pumps.[18]

    It’s also worth mentioning that Taurine is found in rather large amounts in the brain. In addition to improving performance, taurine also enhances mental focus and cognition.[19]

    In order to get the benefits of the water-based pump, it’s important to drink a lot of water with C4 Ultimate and especially when training. That’s of course where Alpha Amino comes in – this is Cellucor’s intra workout supplement that can be used as an “advanced sports drink”.

  • Ultimate Energy & Focus Blend (858mg)

    Now begins our proprietary blend, but we do know how much caffeine’s in here, so that helps us:

    • N-Acetyl Tyrosine

      N-Acetyl L-Tyrosine (NALT) is the main focus booster in most other C4 iterations, but here, it’s only part of the much more comprehensive focus blend. NALT is a more bioavailable form of the amino acid L-Tyrosine, and in line with that, it’s generally regarded as the best absorbed form.[20]

      Studies using tyrosine note that it can improve mental focus this by increasing the production of noradrenaline and dopamine in the body, two big time neurotransmitters.[21,22] Additionally, NALT also supports healthy overall mood while reducing stress.[23,24]

      Since this is before 300mg caffeine in the proprietary blend, we know that it has at least 300mg as well.

    • Caffeine (300mg)

      Jen Jewell

      Cellucor athlete Jen Jewell always goes to the Ultimate length to make the most of her workouts and appearance.

      No more two scooping your C4!!!

      Did we mention C4 Ultimate isn’t messing around? If you didn’t believe that already, then how does 300mg per scoop sound?

      Caffeine is a tried and true stimulant that just about everyone is familiar with and feels reasonably safe consuming. It’s great for all things energy, but also focus, mood, alertness, and performance. 300mg is on the upper end of our preferred caffeine range, but should make for some rather amped up sessions at the gym!

    • Velvet Bean Extract

      Velvet bean extract is typically standardized for L-Dopa, and C4 Ultimate’s Velvet bean is no exception. L-Dopa is a precursor to dopamine and when supplemented stimulates dopamine production in the body. This helps reduce stress and significantly improve mood[25], which ultimately helps concentration and mental performance.

      It’s also worth mentioning that this ingredient helps boost growth hormone levels, decrease cortisol, and optimize testosterone levels.[26,27]

    • TeaCrine

      TeaCrine is a patented form of theacrine, an alkaloid naturally synthesized from caffeine in certain plants, such as the Kucha plant.[28]

      Theacrine provides long-lasting energy and makes caffeine feel “like the first time.”[29] Studies using theacrine note it prevents tolerance buildup to caffeine helping to promote a longer-lasting, smoother energy with lower doses of caffeine.[30]

      You can read more about this in our article titled Theacrine: Caffeine’s Long-Lasting Counterpart

    • AlphaSize Alpha GPC

      AlphaSize Alpha GPC

      Strength gains – but only proven in large doses

      Alpha GPC is one of the most potent and effectively absorbed forms of choline supplements around. If citicoline isn’t in a pre workout, this is the form we want!

      Studies on Alpha GPC document increased mood and focus, and most importantly “mind muscle connection.” Alpha GPC works its magic by enhancing production of the “learning neurotransmitter” acetylcholine.[31]

      Additionally, Alpha GPC has also been documented to improve endurance, power, and post-workout Growth Hormone (GH) levels.[32,33,34]

      In terms of Alpha-GPC increasing strength, however, a very large (and expensive) dose of 600mg is what was found to be successful so far in research. Researchers are currently working on lower doses to see if those gains are replicated, so stay tuned to PricePlow to learn about that.

      Note: The Alpha-GPC here is at 50% ‘strength’ (it’s often bound to silica so that it makes a nice powder). It’s not disclosed if this ingredient is actual Alpha GPC or 50% Alpha GPC (thus making it half the unlisted dose). Confirm with the manufacturer if concerned, and we will update this post if there is clarification.

    • Zembrin

      Zembrin is the trademarked form of Sceletium tortuosum, an herb also known as Kanna. Clinical studies using Zembrin show that it can improve mental performance and heighten overall cognitive function.[35,36]

      Furthermore, there are reports that it may positively impact overall mood and well-being by reducing stress and anxiety.[37] This is one ingredient you’ll definitely “feel,” and we believe there is something to the mood boost study cited above.

    • Rauwolfia Vomitoria


      Acetylcholinesterase breaks down our acetylcholine. Huperzine A helps slow this process down.

      Rauwolfia vomitoria is a species in the plant family of Rauwolfia that’s traditionally used in African medicine as a remedy for potential mental disorders due to its mood-enhancing abilities!

      Modern research notes Rauwolfia aids in lowering body weight[38] and decreasing pain sensitivity, while also possibly treating assorted mental diseases.[39]

    • Huperzine A

      The final ingredient in this all-encompassing pre workout is another powerhouse nootropic, Huperzine A, a.k.a. Toothed Clubmoss Extract.

      Rather than directly increase production of acetylcholine, like Alpha GPC, Huperzine A prevents its breakdown.

      Huperzine inhibits acetylcholinesterase, the enzyme directly responsible for acetylcholine’s breakdown.[40] This means that Huperzine indirectly increases amounts of this all-too-important neurotransmitter by helping it “hang around” longer, and ultimately “indirectly” increasing acetylcholine levels.

Flavors Available

Cellucor Alpha Amino Closeup

After you get amped for your workout with C4 Ultimate, power through your workout with the revamped Alpha Amino. Click the image to read more!

C4 Ultimate currently comes in 20 and 40 servings tubs with four flavors to choose from:

  • Icy Blue Razz
  • Cherry Limeade
  • Orange Mango
  • Strawberry Watermelon

C4 Ultimate is starting as a GNC exclusive product, but you can sign up for price drop alerts below and PricePlow will notify you when there’s lower prices and new flavors out!


The biggest complaint with the main C4 pre workout is that experienced users would need two scoops, and it just wasn’t keeping up with the competition. No more!

Cellucor has released their fair share of C4 incarnations over the years, but none of them hit all the notes like this one does! C4 Ultimate truly is the ultimate form of one of the most popular workouts on the market and should be met with positive reviews from the fans out there, especially those who love the brand but were starting to venture away for the big lift days.

Now, if we could just get them to fully disclose the entire label… but we’ll gladly take this!

Cellucor C4 Ultimate – Deals and Price Drop Alerts

Get Price Alerts

No spam, no scams.

Disclosure: PricePlow relies on pricing from stores with which we have a business relationship. We work hard to keep pricing current, but you may find a better offer.

Posts are sponsored in part by the retailers and/or brands listed on this page.

About the Author: Mike Roberto

Mike Roberto

Mike Roberto is a research scientist and water sports athlete who founded PricePlow. He is an n=1 diet experimenter with extensive experience in supplementation and dietary modification, whose personal expertise stems from several experiments done on himself while sharing lab tests.

Mike's goal is to bridge the gap between nutritional research scientists and non-academics who seek to better their health in a system that has catastrophically failed the public. Mike is currently experimenting with a low Vitamin A diet.

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  1. Curis E., et al.; “Citrulline and the gut;“; Current Opinion in Clinical Nutrition and Metabolic Care; September 2007
  2. Giannesini B., et. al.; European Journal of Pharmacology; “Citrulline malate supplementation increases muscle efficiency in rat skeletal muscle;” September 2011
  3. Perez-Guisado J, Jakeman PM; Journal of Strength and Conditioning; “Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness;” May 2010
  4. Hickner RC. et. al.; Medicine and Science in Sports and Exercise; “L-citrulline reduces time to exhaustion and insulin response to a graded exercise test;
  5. Hill, C. A., et al. “Influence of β-Alanine Supplementation on Skeletal Muscle Carnosine Concentrations and High Intensity Cycling Capacity.” Amino Acids, vol. 32, no. 2, 28 July 2006, pp. 225–233, doi:10.1007/s00726-006-0364-4. https://pubmed.ncbi.nlm.nih.gov/16868650/
  6. Baguet, A et al.; Journal of Applied Physiology; “Important role of muscle carnosine in rowing performance;” July 2010;” 2005
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  8. Kendrick IP, et al. The effects of 10 weeks of resistance training combined with beta-alanine supplementation on whole body strength, force production, muscular endurance and body composition. Amino Acids. (2008)
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  10. Bailey, S; Dietary nitrate supplementation reduces the O2 cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans.; School of Sport and Health Sciences, Univ. of Exeter; 2009
  11. Fulford, J; Influence of dietary nitrate supplementation on human skeletal muscle metabolism and force production during maximum voluntary contractions.; NIHR Exeter Clinical Research Facility, University of Exeter Medical School; 2013
  12. Lee EC, et al. Ergogenic effects of betaine supplementation on strength and power performance. J Int Soc Sports Nutr. (2010)
  13. holewa, J; Effects of betaine on body composition, performance, and homocysteine thiolactone.; Department of Kinesiology, Recreation, and Sport Studies, Coastal Carolina University; 2013
  14. Effect of betaine supplementation on power performance and fatigue
  15. del Favero S, et al Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance . Amino Acids. (2012)
  16. Kalman, D; A clinical evaluation to determine the safety, pharmacokinetics and pharmacodynamics of an inositol-stabilized arginine silicate dietary supplement in healthy adult males.; Nutrition & Endocrinology Miami Research Associates; 2014
  17. MacAllister, R; Arginine and nitrate tolerance; Centre for Clinical Pharmacology, The Rayne Institute, University College London; 2000
  18. Hoffmann, E.K., I.H. Lambert, and S.F. Pedersen, Physiology of cell volume regulation in vertebrates. Physiol Rev, 2009. 89(1)
  19. Alford, C., H. Cox, and R. Wescott, The effects of red bull energy drink on human performance and mood. Amino Acids, 2001. 21(2)
  20. Magnusson, I; N-acetyl-L-tyrosine and N-acetyl-L-cysteine as tyrosine and cysteine precursors during intravenous infusion in humans.; Department of Clinical Physiology, Karolinska Institute, Huddinge Hospital; 1998
  21. Deijen, J; Tyrosine improves cognitive performance and reduces blood pressure in cadets after one week of a combat training course.; Department of Clinical Neuropsychology, Vrije Universiteit; 1999
  22. Neri, D; The effects of tyrosine on cognitive performance during extended wakefulness.; Naval Aerospace Medical Research Laboratory; 1995
  23. Deijen JB, Orlebeke JF; Effect of tyrosine on cognitive function and blood pressure under stress . Brain Res Bull. (1994)
  24. Dollins AB, et al; L-tyrosine ameliorates some effects of lower body negative pressure stress . Physiol Behav. (1995)
  25. Prasad SK, Qureshi TN, Qureshi S. Mucuna pruriens seed powder feeding influences reproductive conditions and development in Japanese quail Coturnix coturnix japonica. Animal. (2009)
  26. https://pubmed.ncbi.nlm.nih.gov/18973898
  27. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2816389/
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  29. Cauli, O; Subchronic caffeine exposure induces sensitization to caffeine and cross-sensitization to amphetamine ipsilateral turning behavior independent from dopamine release.; Department of Toxicology and Centre of Excellence for Neurobiology of Dependence, University of Cagliari; 2008
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  31. https://pubmed.ncbi.nlm.nih.gov/22071706
  32. Acute supplementation with alpha-glycerylphosphorylcholine augments growth hormone response to, and peak force production during, resistance exercise.
  33. Alpha-Glycerylphosphorylcholine administration increases the GH responses to GHRH of young and elderly subjects.
  34. Effect of L-alpha-glyceryl-phosphorylcholine on amnesia caused by scopolamine.
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  40. Zhao, Q; Effects of huperzine A on acetylcholinesterase isoforms in vitro: comparison with tacrine, donepezil, rivastigmine and physostigmine.; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences; 2002

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