The value of such drugs is the perspective they can bring, said writer-director Silva, who has tried mescaline several times.
"My personal experience with it has always been in nature. It just makes you feel personally that I'm a human, like, breathing being standing on a rounded planet floating in space," said Silva, who has a second film starring Cera at Sundance, the horror tale "Magic Magic." ''It really grounds you in a great way that you really sort of like get out of your own little problems that are not even problems, and you really see the big picture. It's easy to forget that you're standing on a planet."
Cera may not have taken the full mescaline head trip, but he can describe how boiled cactus tastes.
"It's a very kind of acrid, earthy, terrible taste," Cera said. "It's almost like a wheatgrass shot, that terrible taste that keeps revisiting you. It shouldn't be eaten. Nature didn't want you to eat it."