ok past 4 hrs in and im having the feeling this is an awesome product
energy is still threw the roof..(slight dip)
any slight jittery feeling i had is completely gone,.. with barely any energy loss
another thing i noticed is i feel clean energy.which means obviously no jitters but also i feel mood improvement, i feel great and happy ..that is big in my book because pretty uch all of those energy drinks can make u feel like shit(even when they serve their purpose)