Bests & Worsts Reviews from Amazon

I spent several hours minimum researching various caffeine supplements, both as individual tablets and within pre/post-workout supplements. Many reviewers indicated that these ProLab tablets were superior to competitors, so I made my purchase thinking that I'd finally found something to curb all the coffee, yerba mate, and energy drinks I need to get through the work and school week. I have taken these tablets for almost two weeks in various states including fasted and non-fasted, as well as with and without other forms of caffeine. Regardless of the conditions, I have not felt a change in energy levels provided by these tablets. I've consumed as many as 4-5 and noticed no difference, but noticed a slight difference when I took a B2 and B12 tablet on another day. As other reviewers have mentioned, the pills are inconsistent in sizing and chalky. I'm not sure if I received a faulty batch or if a handful of the other reviews were paid, but these pills turned out to be a waste of money.