I always take my second as soon as i start to feel the first,i usually roll for hours as long as the pills are good, the most i have eaten is only 3 in one night, my friend loves to snort on first and then eat one at the same time, when you snort it, it hits you right away but doesn't last that long so by the time it wears off from snorting it you are already rolling on the one you swallowed, have fun