We"re confident you will not be able to find a product that comes anywhere near matching the brutal serving sizes of the Arginine Matrix 5000mg and Citrulline Matrix 5000mg. This premium synergy of Muscle Pump inducing actives is possibly the most potent on the market today! This stack works by significantly increasing the supply of de-oxygenated blood (loaded with Raging Beast"s other actives) to your working muscles allowing you to train at a greater intensity. Another major benefit is that this increase supply of blood flow also helps transport away lactic acid (waste product of exercise) giving you another reason why you"ll be able to train harder for longer! How will you know that this is the case? The re-assuring, outrageous muscle pumps will give you immense satisfaction that this product genuinely works! Arginine has also been shown to significantly increase levels of natural Growth Hormone for increased strength and of course fat loss as well as improving your immunity - critical when training hard! Enhanced Energy: Raging Beast is the first Pre-Workout sports supplement to incorporate a dual acting stimulant blend of caffeine 300mg and Cocoa Extract 100mg. This two tier stimulant blend in a combined dose of 400mg has also been shown in numerous research studies to significantly boost energy, while powerfully stimulating you through even the toughest and most gruelling of workouts! The faster acting caffeine and slower release cocoa provide a formidable solution to help you breakthrough long standing barriers and ensure that you finish each workout like you started, with the same passion and desire. To energise you even further we"ve included 30mg of Co-enzyme Q10 which plays the all important role or turning calories from food into usable energy and with 7.5 microgram of Vitamin B12 also added you will certainly not be lacking in energy!