Cellucor C4 Ultimate Review


Last modified: November 6, 2022

  • Value for money
  • Ingredients
  • Effectiveness
  • Testimonials

Cellucor C4 Ultimate Overview

This supplement is manufactured by Cellucor who claim it is the ‘the most hard-hitting, intense, and focused pre-workout on the market’. This may be true as C4 Ultimate helps improve endurance, frequency of pumps along with enhanced focus and energy. Particularly effective at doing what it is designed to do because it increases your drive as well as provides you with more energy.

What does Cellucor C4 Ultimate do?

  • Increase focus.
  • Increase drive before workouts.
  • Establishes energy early on.

Manufacturer Description

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 to push for one more rep, one more set, and to pick up that heavy dumbbell you’ve been thinking about for weeks. Are you ready to see what you’re made of? Contains CarnoSyn® Beta Alanine, an amino acid, which converts to a compound in your body called carnosine. It is the only patented and clinically studied form of beta-alanine that has been shown to support muscular endurance.


  • Expensive.
  • Some ingredients are branched under a blend.
  • Potential side-effects.

Consumer Testimonials

“Great pre-workout. I don’t take a full scoop. After a week or so, I tried a full scoop and it had me buzzing. 3/4 scoop seems to do the trick for me.”

“Very explosive, wakes me right up within 15-20 minutes and I’m ready to hit it hard. Seems as though it helps clear my mind and gives great focus. Definitely works the sweat out of me as well. Highly recommended!”


“I used to use the C4 Ripped and the energy wasn’t great; and after using the Ultimate now, and I find that when I do get the energy burst (which doesn’t always happen) it really hits and feels fantastic and makes my workouts a better experience and I get more out of them. The energy doesn’t affect me as I would like, but overall, this has been the best pre-workout I’ve used.”


“Best supplement out of Cellucor’s product line. Hefty dosage of Nitrosigine, Citrulline, and Betaine while having the stimulant right around my tolerance. An overall excellent PWO for pump, energy, and focus without the inclusion of Yohimbine, and the flavour is spot on!”

What's in Cellucor C4 Ultimate

  • Citrulline Malate (6g).
  • CarnoSyn® Beta Alanine (3.2g).
  • Creatine Nitrate NO3-T® (1.5g).
  • Betaine Anhydrous (1.5g).
  • Nitrosigine® (1.5g).
  • Arginine Alpha Ketoglutarate (1g).
  • Taurine (1g).
  • Ultimate Energy & Focus Blend (including caffeine). (858 mg in total blend per serving).

Our Verdict

Not the best value supplement out there (it works out at about $2 / serving). C4 Ultimate gives the impression of the best pre-workout, but some of the ingredients are a blend and may produce side-effects.

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