Fusion ONE PUNCH Pre-Workout Review


  • Contains Citrulline Malate.
  • Taurine can prevent cramping.
  • Good dosage of Caffeine Anhydrous.


  • Missing key pre-workout nutrients (eg. Creatine Monohydrate).
  • Citrulline Malate slightly under-dosed.
  • Not great value for money, in our honest opinion.

See Your Best Options In Our
» Top 3 Pre-Workouts Page «


About The Product

One Punch is a pre-workout supplement made by Fusion. It costs $44.99 CA (making it around $35 USD) but its overall serving size depends on the user; you have the option of using 1 scoop, which would provide 40 servings or 2 scoops with 20 servings.

In terms of flavors, it comes in Cherry Blaster, Rocket Pop or Sour Green Apple - sounds pretty tasty, right?

From first glance, were glad to see that Fusion had completed some research by adding one of our favorite ingredients, Citrulline Malate. Also, they havent made the common mistake of over-dosing Caffeine Anhydrous with 1 scoop (although the 2 scoop servings will be too much for us personally).

Anyway, well expand on this as we take you through One Punchs nutrient profile. But first, well tell you more about the company behind it.

Who Is Fusion? 

Fusion is a Canada-based supplements company that was founded in 1998. They offer a range of supplements to suit everyone; whether your aiming to boost your testosterone levels or lose body fat.

With One Punch though, Fusion have tried to create a pre-workout supplement to help take your training to the next level - so you see results, faster.

Ultimately, youre here to learn more about this product, so lets stop wasting time and take a look at the ingredients inside One Punch, in the next section…

One Punch Ingredients Explained

One Punch pre-workout contains 5 main ingredients overall. This is a good number to have in a supplement; from experience, we find that products containing over 10 are usually under-dosed.

As a result, we definitely prefer companies to add fewer nutrients in optimal dosages. For the most part, were happy that One Punch has been dosed well, with a sensible dosage of Caffeine Anhydrous being a particular highlight (when consumed in 1 scoop servings).

However, one small issue is that the dosage of Citrulline Malate is lower than optimal with 1 scoop.

Well explain all of this in more detail as we take you through each ingredient in Fusions pre-workout, One Punch. By the end of this review, youll have a good idea of how safe and effective this supplement really is.


Heres Everything You Need To Know:

Citrulline Malate 

In case youre unaware, Citrulline Malate is simply L-Citrulline bound with Malic Acid; the Malic Acid allows it to improve your strength and endurance, due to it raising your ATP levels.

So what does the L-Citrulline do? Well, its proven to raise your nitric oxide levels, which increases your blood flow - leading to intense muscle pumps while you lift weights.

Ultimately, theres not much better than the sensation of seeing your arm inflate while bicep curling. If you lift, then youll know what we mean.

For this reason, Citrulline Malate is an ingredient that we always look for in pre-workout supplements.

But the bad news is that Fusion has slightly under-dosed Citrulline Malate in One Punch; the optimal dosage has shown to be 6,000mg in studies, but there is only 4,000mg in this pre-workout.

So were slightly disappointed, but in fairness, were just happy that One Punch contains Citrulline Malate in a respectable dosage anyway (making it better than many other pre-workouts simply for this reason).

L-Aspartic Acid 

Weve been working in the supplements industry for a pretty long time now. And this is the first time weve seen L-Aspartic Acid in a supplement (its more common to see D-Aspartic Acid).

L-amino acids are known for helping to form proteins and detoxify ammonia in your body. So its clear that they play an important role in your body.

However, when it comes to improving your performance in the gym within 30 minutes of consuming, L-Aspartic Acid isnt the best choice.

Think about it. You consume Caffeine Anhydrous and you feel its effects within 20-30 minutes. Thats what you really want from pre-workout supplements.

Ultimately, theres a reason why bodybuilders arent seen consuming L-Aspartic Acid - its not really necessary, as y9our body produces a reasonable amount naturally.

For this reason, we would have much preferred to have seen something more beneficial at raising your game in the gym. Something like Creatine Monohydrate, which everyone knows works.



Most people know Taurine due to it being added to energy drinks. Its actually for this reason that many mistakenly believe that its able to boost your energy levels.

The bad news is that Taurine hasnt shown to have any impact on your energy levels in any study.

That doesnt mean its useless though; Taurine has shown to help prevent cramping and actually work as a slight relaxing agent (which is the real reason why its added to energy drinks).

So while its not going to make or break a pre-workout supplement, theres no denying that Taurine is a bonus addition to any product. But if were being very critical, then we would have preferred to see Taurine removed and the dosage of Citrulline Malate increased to 6,000mg per serving.

Agmatine Sulfate

If youve had a look at numerous different pre-workouts, then youll have no doubt seen Agmatine Sulfate before. So you might be surprised to hear that Agmatine Sulfate isnt actually very beneficial.

Why? Because its not shown to be 100% reliable in studies, due to having a poor absorption rate, in our honest opinion.

What is it supposed to do? Well, some companies believe that Agmatine Sulfate is able to raise your nitric oxide levels, in a similar way to Citrulline Malate, due to it being a derivative of L-Arginine.

Ultimately, we would have simply preferred Fusion to have removed Agmatine Sulfate and increase the dosage of Citrulline Malate instead (as Citrulline Malate is tried-and-tested to work).

Caffeine Anhydrous 

Its quite sad to see an increase of people searching for non-stimulant pre-workouts. This is definitely a consequence of companies adding massive dosages of this stimulant, which leads to jitters and energy crashes.

But think about it. If you consume too much coffee, then youll suffer the same side effects, so what do you do? Answer: drink less coffee.

As a result, we believe companies should add a sensible dosage of Caffeine Anhydrous to their pre-workout supplements. Theres simply no need to add over 200mg Caffeine Anhydrous per serving, as youll still get an energy boost with dosages as low as 100mg.

Were really glad to see that Fusion hasnt been stupid and chose to add 200mg; this should keep Fusion safe for everyone and still give them that kick that they want to smash their gym session.

They do give you the option of consuming 400mg with their double serving. But we personally wouldnt choose to consume this, as we believe it would cause us to suffer jitters. So 1 scoop will be more than enough for Caffeine Anhydrous.


See Your Best Options In Our
- Top 3 Pre-Workouts Page -

Side Effects

One of the best things about Fusions One Punch is that it doesnt contain any ingredients that are likely to cause side effects in 1 scoop.

However, if you choose to consume the 2 scoop serving size, then remember that youll be putting a massive 400mg Caffeine Anhydrous into your system at once (which is the recommended daily allowance for your full 24 hours).

So personally, we would only consume the 1 scoop serving of One Punch to stay safe.

Heres the potential side effects of taking One Punch in 2 Scoop Serving Size: 

  • Jitters (Over 200mg Caffeine Anhydrous)
  • Energy Crashes (Over 200mg Caffeine Anhydrous)

One Punch Review Conclusion

Overall, its clear to see that Fusion has produced a very respectable pre-workout supplement. It certainly deserves its place on the market.

However, once you start analyzing the smaller details, you can see whether small mistakes have been made; the thing were most dissapointed by is the under-dosed Citrulline Malate dosage in One Punch.

Ultimately, small issues can make the difference between great pre-workouts and the best products on the market.

Fusion ONE PUNCH Pre-Workout Review

Bottom Line

While One Punch contains some great nutrients and a sensible dosage of Caffeine Anhydrous, we dont believe it can compete with the best pre-workouts available right now at a similar price.

See The Best Pre-Workouts This Year!

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