I took because been reading good reviews. Propyl 2 jars. By the end of the first very clearly I saw a burst of energy, lack of sleepiness, the overall tone. Just flew! I take a break 2 months, now I drink again, but it was no longer such. I had to take a 100mg capsule. Not very convenient for my weight. I have to drink: a / the next day or two. But this is the packaging was perfect.