Pack of 4/8ozUniversity Research Scientists Discovered that Redline Delivered:A significant 7.5% improvement reaction time!A dramatic 13% increase in energy!An amazing 15% increase in focus! Whether youre reacting to a 100 MPH pitch or a 120 MPH tennis serve, juking a player on the football field or delivering a knock-out ultimate fighting blow, reaction time is the key to a winning performance. Victory is determined in fractions of a second. So, use the power of Redline Xtreme to give you a mind-blowing performance boost by increasing reaction time by 7.5%. To further insure victory, Redline Xtreme dramatically enhances focus and energy. Winning isnt everything its the only thing. Choose Redline to destroy your opponent and experience victory.A normal reaction of Redline Xtreme is tingling of skin.