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PSI Vasodilator & Nutrient Delivery Maximizer is a scientifically-dosed non-stimulant (caffeine-free) pre-workout. 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.

PSI is a fast acting non-stim vasodilator which will dramatically improve your workouts, promote mental focus, clarity and serotonin release factors by combining the optimal ratio of taurine and tyrosine. This non-stim pre-workout sets a new standard for non-stim pre-workout products by assisting you with your conscious muscle contractions during physical exercise (mind-muscle connection).

Be prepared for an amazing training session, huge pumps and intense vasodilation.



Citrulline Malate is a comprehensively researched non-stim pre-workout ingredient that increases arginine in the blood. It also helps to promote vasodilation by increasing nitric oxide levels, improves buffering capacity by reducing lactic acid build up, improves strength training, reduces muscle soreness and enhances recovery. 


Arginine is a vasodilator which increases muscle volumization and enhances nutrient and oxygen delivery to your muscles. It helps to prevent fatigue, allowing you to train harder for longer. Alpha-Ketoglutarate is used by your body to breakdown fatty acids for energy. It acts as a transporter of creatine into muscle cells, decreases lactic acid build up, improves oxygen uptake and has an anti-catabolic effect after intense exercise. 


L-Tyrosine is a naturally occurring amino acid that enhances alertness and cognitive performance, especially in demanding situations (such as heavy or extended workouts). It stimulates neurotransmitters in the brain and plays a role in the production of epinephrine and dopamine. L-Tyrosine also helps to alleviate stress, and helps with recovery from fatigue without any jittery side effects. When taurine is combined with tyrosine, they work synergistically to create a lift in mood and overall focus. 


aurine is a naturally occurring amino acid and powerful antioxidant that assists in decreasing muscle damage and soreness, improves strength levels and helps to improve both mental focus and reaction time. L-


L-Norvaline helps to increase levels of arginine in the blood by inhibiting the enzyme that tries to break it down (arginase), leading to increased vasodilation and nutrient delivery to the muscles during training. AGMATINE SULFATE: Agmatine Sulfate is a precursor to AAKG and acts as a vasodilator due to its effects on the enzyme nitric oxide synthase. By increasing vasodilation during training, it has a positive impact on muscle protein synthesis and cell volumization.