It definitely works imo. After working some late nights and then having the am's come too soon it provides a good MENTAL awareness boost better than anything that maybe out there. If you have membership to Sam's club, they sell it there for $36 for a case of 24, so to me it is worth it. When working alot or need that mid afternoon boost I will take. One in the am and one around 6 or 7 if working past mid night. If you chill it, it will take the bit out of it. Kind of an acquired taste, but have found that orange has the less bite of the three flavors.