These tested as much MDMA as they contain caffeine AND procaine.
Goes to show a lot of people think MDMA and caffeine is clean, yet it can help you get headaches, and other serious heart problems (people died from Red Mitsis in Australia in 2003/2004, they contained 112mg MDMA along with a bunch of caffeine)..
It definitely does help push the peak into gear though! And as a result can make it last not as long.