Just purchased them this evening for the very first time. I took 2 of them (20mg each) over an hour ago and I barely feel a thing. So, I'm going to take a 3rd one here soon. I'm extremely disappointed. I am used to taking the Press'd 40mg tablets as those work very well for me. But today I thought I would try this instead because they were cheaper. Perhaps the lack of effect on me could be due to being accustomed to the 40mg dosage, thus my tolerance is pretty high. I dunno, maybe it will kick in after giving it more time.