Last week I got this demo from LG. When I first got it I read the directions where it stated take 1-3 tablets and let it dissolve under tongue or cheek. I started out with 1 tab, and put it under my tongue and couldn't stand the taste. If you put it on your cheek the taste isn't as bad. I noticed no effects from using 1 tab. On Monday I took 2 tabs on my way to the gym, about half way into my workout I was a little more alert, and noticed that I wasn't getting as tired as I normally do. I will take 3 tabs tomorrow on my way to the gym and report back. So far it doesn't seem to have much of an effect.