Doesn't replace a cup of coffee, no energy boost found here.
These don't seem to have much of an effect. As someone that normally drinks only one cup of coffee a day, and fairly low caffeine tolerance, I expected these to be maybe too much caffeine... but they have no discernible effect. An hour or two after taking it, you'd have no idea you took it. Maybe it works for some people, but a bottle of sugar pills would have more effect for me then these.
Rating: 2 stars