What's in it?

C4 combines amino acids with stimulants to produce the effects they have become famous for.  

The most effective ingredients in this product are:

CarnoSyn Beta-Alanine is one of the most effective ingredients in the bodybuilding world.  It works by combining with the amino acid histidine to form carnosine, which increases the the muscles buffering capacity of hydrogen atoms.  Hydrogen atoms in the muscles increase the acidity, which causes muscles to become fatigued more quickly and to lose endurance.  By buffering the hydrogen atoms, the muscles are able to endure more strenuous exercise, allowing you to have a more effective workout and allowing you to work out for extended periods of time.

Creatine Nitrate is another ingredient that is considered a must for any serious workout junkie.  Scientific studies have shown that creatine use can increase maximum power and performance in high-intensity anaerobic repetitive work (periods of work and rest) by 5 to 15%.

Arginine Alpha Ketogluterate.  While AAK may be a non-essential amino acid for normal people, it is most certainly essential to those serious about bodybuilding.  According to Mens Fitness, "L-argnine increases nitric oxide production in blood vessels, increasing their diameter. This increases blood flow without raising blood pressure. When blood vessels dilate, more blood reaches the muscles and tissues and provides a larger amount of carbohydrates, proteins and various muscle-building hormones."

Niacin, or ​​Vitamin B3, without a doubt, is one of the best vitamins that supplements can include. Niacin has been scientifically proven to boost levels of good cholesterol, lower bad cholesterol, and increase energy levels.  Niacin is the ingredient responsible for that tingling feeling you get about 20 minutes after ingestion. Along with the massive energy rush, the niacin flush will get you even more amped up for a killer workout.

Explosive Energy Blend

C4 has an energy blend consisting of caffeine, N-Acetyl-L-Tyrosine, L-Dopa, and Theacrine.

Caffeine is an extremely well known stimulant that is most known for producing stimulant effects by drinking coffee, and is the worlds most used psychoactive drug.  Caffeine is found in almost every weight loss supplement and pre-workout on the shelf and ts stimulant effects allow for prolonged workouts and its usage has been extensively documented throughout history.

 N-Acetyl-L-Tyrosine is an amino acid that is involved in producing dopamine and adrenaline.  This is beneficial when taken before a workout because higher amounts of dopamine and adrenaline allow for harder, more strenuous workouts.

L-Dopa is an amino acid that is used to increase dopamine concentrations, increasing the amount of pleasure you will get during your workout allowing you to push through fatigue,

Theacrine ​is a stimulant similar to caffeine that increases your mental and physical performance.


  • High quality ingredients
  • Good balance of stimulants and nutrients
  • Improved endurance 
  • ​Increased Nitric Oxide levels
  • Reduced Fatigue
  • Found in stores and online


  • Stimulants can have adverse affects on people with heart problems


C4 is a reasonably priced pre-workout supplement.  For 30 servings the price is $28.49, or $0.95 a scoop.  Cheaper than a cup of coffee, while providing you with the amount of caffeine of 4.  You also get a discount for buying in bulk, paying only $47.47 for 60 servings. The prices on amazon are much lower than those found in stores, and might even be considerably higher than online.


As far as pre-workout supplements go, few brands have been able to build up the reputation that Cellucor has with it’s line of C4 pre workouts.  C4 is one of the most popular pre-workouts on the market,  and it is one of our favorites as well.  C4 is a stimulant-based pre workout,  This means that if you have any heart related issues, it is in your best interest to steer clear of this product and check out some non-stimulant based pre workout blends.

C4 uses a potent energy blend consisting of caffeine and other stimulants to give you the motivation you’ll need to get off the couch and to the gym. I am a big fan of pre workout, especially pre workouts that contain stimulants, and C4 has never failed me and I always keep some on hand in case I don’t like whatever pre-workout I’m trying at the time.  

C4’s ingredient list contains a blend of vitamins, natural energy boosters, plant extracts, and stimulants that allow you to push through that normal fatigue and go harder and longer at the gym.

C4 Pre Workout Review

How does C4 work?

  • Increased Energy
  • ​Increased Focus
  • ​Bigger Pumps
  • ​Faster Recovery
  • Increased Agressiveness  

What are the benefits of C4?

Our Number One Pick for Steroid Alternatives:

CrazyBulks D-Bal