I would give this product a total of a 4/5. Let's start with the positives. The drink says what it is sets out to do. It provides an amazing amount of energy throughout the week. I am working full time and doing a master's thesis part time and I had so much energy throughout the whole week to accomplish and keep up with all my tasks. Mostly would be 10-12h work days and drinking this in the morning I felt the prolonged effects and never really had a crash or dip in the afternoon. One of the s...Read more.