DONT TAKE THEM PERIOD.
A friend of mine one evening took four, yes FOUR before hitting the town with me and a few friends. After half an hour and a few drinks, he lost it with some guy in the pub we was in and threw him threw a window. The police turned up and he beat up two policemen to a pulp and needed another six to handcuff him. All his hands and arms were cut. He got three years for GBH with intent.
DONT EVER USE THEM TAKE NO XPLODE OR EPH INSTEAD FOR A BOOST!!