MyProtein Impact Pump Review

Impact Pump is a pump-based pre-workout by MyProtein which contains some additional ingredients such as BCAAs and Carnitine.  Unfortunately, most of the ingredients are dosed pretty low…

MyProtein Impact Pump

Arginine AKG

L-Arginine Alphaketoglutarate (AKG) is usually alleged (by supplement companies) to be more bioavailable than standard L-Arginine and thus actually worth taking prior to working out.  However, just as L-Arginine has failed in multiple studies to provide any sort of performance enhancement, so too has Arginine AKG, rendering it just as ineffective as L-Arginine in the eyes of science.


Carnitine has a variety of benefits tied to it, but in the context of MyProtein Impact Pump it is likely intended to enhance recovery and improve exercise performance.

Carnitine has been shown to improve aspects of recovery from exercise as well as increase muscle oxygenation which may lead to performance enhancement during exercise.

It makes perfect sense for MyProtein to include Carnitine in the Impact Pump formula, but the dose is certainly less than optimal.  With only 750mg of Carnitine per serving, users of Impact Pump will likely need at least two servings at a time to receive the benefits that Carnitine has to offer.


Beta-Alanine is a precursor to the dipeptide Carnosine, higher levels of which are associated with greater muscular endurance.  Carnosine works by reducing the amount of Lactic Acid build-up in muscle tissue during exercise, thereby delaying fatigue.

This muscular endurance enhancement has been demonstrated in multiple human studies and Beta-Alanine is considered extremely reliable at doses ranging from 3-6g daily.

Unfortunately, Impact Pump contains just 700mg of Beta-Alanine per serving, much less than what can be considered a clinical dose.


The Branched Chain Amino Acids (BCAAs) include Leucine, Isoleucine, and Valine.  Leucine is the most potent with regards to stimulating muscle protein synthesis (via mTOR) but combination BCAA supplementation is an effective means of encouraging optimal muscle growth and recovery from exercise.

There is preliminary evidence to suggest that BCAAs may also help ward off fatigue towards the end of a rigorous workout, but this role remains under-researched in humans.

Creatine Monohydrate

Creatine is hands down the most reliable, effective, safe supplement for increasing strength and muscle mass, but the dose present in Impact Pump is far less than what has been used successfully in studies.

With just 500mg of Creatine Monohydrate per serving, Impact Pump is extremely likely to provide any of the benefits of Creatine.


Citrulline, though less studied than Creatine, is also a highly reliable performance enhancing supplement.  While Creatine can increase strength and power, Citrulline has been shown to increase muscular endurance, effectively increasing the amount of reps that can be performed towards the end of your workout.

Effective doses of Citrulline range from 6-9g, but Impact Pump contains just 500mg.  As with Creatine, there really isn’t enough Citrulline in the Impact Pump formula to make much of a difference.

The Bottom Line

Impact Pump provides several effective ingredients which might improve muscular endurance, strength, and recovery, except that most of these ingredients are severely under-dosed.  For that reason, we just have to say no to Impact Pump.  Stick with the single ingredient supplements MyProtein!

Still not sure which non-stimulant pre-workout is right for you?  Check out our Best Non-Stimulant Pre-Workout Supplements List! exists to educate the supplement community and seperate the science from the hype.

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