C4 Extreme Energy Pre Workout Review

C4 Extreme Energy Pre Workout Review Summary;


Some pretty basic ingredients, nothing that you would class as Extreme, or out of this world. 


A single dose will give you your 300mg of caffeine, so not a bad start. But it does contain some more pointless ingredients. 


You will find it for under £1 per serving/scoop. So you can't complain on the price. 


Fruit Punch tastes alright, though as with some of the cheaper ones, a bit chemically. 


  • It has got a high dose of caffeine 
  • It's not very expensive, so may be good as a backup pre workout


  • Most of the ingredients are underdosed
  • Taste isn't anything to write home about

It's fine, though it barely scrape that barrel to be honest. With the only useful ingredient being the 300mg of Caffeine, everything else is either under dosed, or has no visible or plausible usage. 

Cellucor has been around before the dinosaurs*, and I guarantee if you ask someone in a gym about C4 Preworkout, they would have heard of it. 

In the early days of pre-workouts, C4 was one of the core products that appeared in the typical gym goers bags (for those who couldn't handle JACK3D). 

After a while, they started to branch out with other versions, including C4 Sport, C4 Ripped & C4 Extreme Energy. Today we are going to look into the 'StimJunkie' version, I.e C4 Extreme Energy, packed with 300mg caffeine, among other ingredients. 

But, is C4 Extreme Energy still worth getting in this day and age, or are there better products to purchase your Stim Crazy pre-workout. 

Ingredients - What's Inside?

As this is the 'extreme' version, we are hoping that we will see some epic ingredients that will blow our minds, or at least maybe stand out from the bog standard version?


1 Scoop (10g)


500 mg


300 mg

Creatine Monohydrate

3000 mg


2000 mg

Citrulline Malate

2000 mg

Panax Ginseng Root Extract


Cocao Seed Extract


Toothed Clubmoss 


Cellucor claim that not all pre-workouts are born equal and that they provide you with boundless energy. As you can see from the ingredients list, we are getting some standard ingredients, but also a few new additions we haven't seen before. 


Usually added to pre workouts to help with alertness, as well as increasing stamina and general performance. Top end of recommended dosage, with some studies suggesting 500mg is the optimal dosage. Not a bad start to the list. 


A staple of most pre workouts, especially those within the stim focused categories, as Caffeine is such as standard and cheap stimulant. C4 Extreme throws you a 300mg hit, which should be more than enough for most people. 


The marmite of preworkout ingredients. Beta-Alanine is either your favourite addition, or your worst nightmare. 

Supposedly the CarnoSyn is a better, more 'stable' version or Beta-Alanine. But they still claim you should be taking 3200mg per day to be effective. 

As such, this is under dosed and really should be taken as a separate supplement to gain the potential benefits from it. 


Most people who have read this blog a few times will already know that I personally hate creatine inside of pre workouts. Creatine is a product that needs time to saturate, meaning it can take days, weeks or even months to properly start working. 

Taking 3grams every couple of days isn't going to be hitting the numbers that have been suggested. Ideally you should be having 3 - 5grams per day, and you shouldn't really be having high stim pre workout every single day. 

Citrulline Malate

Another standard ingredient you will find in most pre workouts. Helping increase blood flow and nitric oxide levels. The standard dosage should be around the 6000mg mark.

Coming in at 2000mg, we are 2/3rds short. Which is a little disappointing, considering it's not an expensive ingredient to have in here.

Panax Ginseng

We have seen Ginseng in a few pre workouts in the past, for example the Boogieman pre workout. No optimal dosage noted for this ingredient, and no real studies to back up it's supposed anxiety reducing abilities. 

Cocao Seed

Oddly, they don't actually explain why they have added cocao seeds, and there are only a few reasons they may have done. 

  1. They wanted to increase the caffeine amounts, as it does contain a very small amount, though they don't add it to the caffeine count. 
  2.  They wanted to help with lowering blood pressure, which does make some sense, considering the caffeine content. 

Considering the 75mg, we can only assume it would be for the second point. Though the overall effect is quite small, and there were a lot of limitations within the study. 

Toothed Clubmoss

In the American version, and possibly newer version Toothed Clubmoss has actually been removed and the core chemical Huperzine A has instead been used. 

If they are adding it for Huperzine, which we can only assume they are, then there is little reasoning for including it. It's main notable uses, currently is for memory improvement. 

It doesn't seem to be required in here, personally. 

Ingredients Verdict

It's a bit of a mixed bag. Caffeine and Tyrosine are both useful and well dosed, but the rest are either pointless, or under dosed (Beta-Alanine for example). As such, it gets a middle of the road 3.

Pricing (Plus Price Per Serving)

You really do only need a single dose of this, as double scooping will push you into 600mg caffeine, which can be a bit much for some people. 

Pricing seem to hover around £20 - £27 depending on where or when you pick it up. Amazon seems to be a pretty stable place for pricing on this particular version. 

As such that would cost you roughly £0.75 per serving. 

Pricing Verdict

It does only cost £0.75 per serving, but that serving is mainly caffeine and Tyrosine, which could be grabbed from most cheap energy drinks. 

How Does It Taste And Feel?

As Fruit Punch was available, we decided to treat ourselves. And to be 100% honest...it tastes like you have licked a battery. Very 'chemically', and has no redeeming features. 

As for the feel of it, you of course get that slight buzz from the Beta-Alanine, around 10 - 15minutes after you take your scoop. With the caffeine taking a little longer to appear. 

You will feel a bit better and a little push from taking it, though nothing amazing sadly. 

Taste Verdict

It's fine, can't really say much more than that. Even if some of the reviewers claim it's mind blowing..

C4 Extreme Energy Pre Workout Review - Final Verdict 

At the end of the day, it's a run of the mill pre workout. We would even go as far as saying, it makes more sense to get the original (for the same price) and then double scooping it. When we where writing this C4 Extreme Energy Pre Workout Review, all we could feel is that it's all under dosed and the original could be double scooped. 

That way you get 3200mg of Beta Alanine, and 300mg of caffeine and 2000mg of AAK, which would be more beneficial than this particular version which is sadly missing those optimal dosages. Even that would still be lower than you should be taking, but at least you wont have to have 600mg of caffeine to try and get 6g of Beta Alanine. 

If you are someone just trying out pre workouts, then this is a start, but even then you could try Strom Sports Stimumax without having to go for Pro or Black editions and get much better scoops.  

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