VMX?, PhD?s ultra-concentrated, super-strength matrix of performance boosting ingredients, represents the ultimate evolution in pre-workout nutrition. VMX? is so concentrated, we have even left all colouring out, in order to fit in the necessary active ingredients to ensure an even greater pre-workout experience. VMX?, PhD?s ultra-concentrated, super-strength matrix of performance boosting ingredients, represents the ultimate evolution in pre-workout nutrition. VMX? is so concentrated, we have even left all colouring out, in order to fit in the necessary active ingredients to ensure an even greater pre-workout experience.