REDRUM™ by Insane Labz® is one of the top stimulant pre workouts ever formulated. REDRUM™ combines the effects of Ampiberry® and OxyGold® with Agmatine Sulfate for an amazing ingredient delivery that could lead to murderous pumps in the gym. If you are wanting to MURDER your workout then you need to try REDRUM™ with our legendary vascularity enhancer Insane Veinz®. So what is the strongest pre workout on the market? Well Insane Labz® manufactures the top 5 and REDRUM™ fits right in the mix.