A MAK-Honest Review of PSI

Supplement Type: Pre-Workouts

PSI by EHPlabs is a non-stimulant pre-workout making it the perfect supplement if you like to train later in the day, or if you are sensitive to stimulants. PSI was developed using ingredients that work synergistically to boost your focus and performance. It works to promote vasodilation, which enhances nutrient and oxygen delivery to your muscles while you’re training allowing you to train harder for longer, while also improving muscle cell hydration and volumization. PSI is the perfect PM performance boost so you can make the most out of each and every workout.

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The PSI Review...

PSI is a stimulant free pre-workout based on a pump formula which helps to boost blow flow to the muslces, meanwhile, enhancing mental ability. This product by EHPlabs cuts out any stimulants that are generally associated with pre-workouts and focusses solely on its pump formulation. This allows you to stack PSI with other pre-workouts if you so desire to give you even greater boost and focus.

PSI also comes in three flavours: Blue Raz, Fruit Xplosion, and Kiwi Strawberry; and being developed by EHPlabs you can trust that they all taste delicious!

When to take PSI?

For best results, consume PSI 20 minutes before exercise to allow for maximum absorption. PSI does NOT contain any caffeine or other central nervous stimulants. You may consume PSI in the evenings prior to training and it should not affect your ability to sleep. PSI will increase oxygen and nutrient delivery to working muscles which may cause a natural increase in energy (ATP production).

How does PSI work? Pros?

PSI is meticulously engineered to boost physical performance during exercise by enhancing natural energy production and vasodilation. The unique combination of powerful nitric oxide and muscle cell plasma volumizing ingredients in PSI pre-workout maximises nutrient and oxygen delivery to working muscles, assisting you to force out extra reps, as well as giving you a mind-blowing pump.


  • Cell volumization
  • Muscle hydration
  • Nutrient and oxygen delivery system
  • Metabolism and mood enhancers
  • Increased pump, strength and endurance
  • Works synergistically

Customer Testimonials:

Elizabeth Grech

"Love this pre workout, gives a decent pump and boosts my energy well enough considering it is a non stim pre workout."

Kaehlee Walters

"Fabulous! Came quickly and love the product! Thanks guys!"

David Wilter

"This is a 5 star in my books, 10/10 for flavour and 10/10 for power. This is like no other product I ever tried and I've used a few, so AWESOME product all round. So worth the money."

Click here to read more!

    Quick Answers to Common Questions

    How many servings of PSI can I take per day?

    The recommended dose is 1 serving per day and we recommend taking no more than 2 scoops of¬†PSI pre-workout per day. You should test your tolerance to¬†PSI by starting with ¬Ĺ a scoop first and building up from there (due to safety...you can obviously take more but they can't recommend more due to the ingredients).

    Why is PSI such a fast acting product?

    PSI is fast acting due to its potent vasodilator delivery system containing ingredients such as Agmatine Sulfate and L-Arginine. These ingredients help to increase the bio-availability of nitric oxide leading to an increase in blood flow and oxygen and nutrient delivery. These ingredients have a flow on effect to each other which creates a strong physiological and mental response.

    When should I take PSI?

    PSI should be consumed approximately 20 minutes before exercise to allow for maximal absorption.

    Will PSI give me a tingling sensation?

    No, PSI will not give you a tingling sensation as it does not contain the amino acid Beta Alanine. It will however increase the feeling of muscle fullness and 'pump' due to its vasodilator boosting effects along with a decrease in fatigue.

    Does PSI have a "crash" effect after it wears off?

    PSI pre-workout should not cause any post-workout crash as it works by increasing blood flow around your body and improving mental focus and cognitive ability. It is non-stimulatory so there is very little effect on your adrenal glands and cortisol.

    Can I take PSI later in the day? Will PSI affect my sleep if I take it later in the day?

    Yes, you can use PSI pre-workout in the late afternoon as it is a non-stimulatory supplement. It should not affect your sleep as it focuses on improving blood flow and helps to remove metabolic by-products from your muscles.

    Can I take PSI just for increased focus (i.e. for studying)?

    Although PSI pre-workout has been formulated as a pre-workout product, the key cognitive ability and mental focus enhancers, along with vasodilators may assist people with other non-physical related activities such as studying due to the increase in blood flow and oxygen delivery to the brain.

    Can I stack PSI and RP Max?

    Yes, PSI and RP Max have been designed to be stacked together while also being used independently.

    PSI Ingredients

    • Citrulline Malate
    • L-Arginine Alpha-Ketoglutarate
    • Agmatine Sulfate
    • L-Taurine
    • L-Tyrosine
    • Norvaline
    • Beet Root Powder¬†

    The Verdict!

    PSI by EHPlabs is a fantastic non-stim pre-workout product that can make a great addition to any stack. It can be staked with other pre-workouts for maximum effect and can also be taken late in the day without affecting sleep cyles.


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