I wouldn't if I were you. Theyre hard as hell to crush up and will burn and clog your nose, which shitty effects since its time released. When I used to get Concerta I would get the 54(or 56, I forget)mg ones and chew 2 or so and it would be pretty fun. But I think I did have a tolerance cause 56(or54)mgs wouldnt do shit anymore, so start with chewing 60-70mgs at first. Oh, and to mask the hellish taste of the pills, chew some sour Skittles with it and plug your nose and you wont taste the pill at all. And rinse your mouth out with water or something before you unplug your nose becasue peices of the pill get stuck under your lip and between your teeth and they taste bad enough to bring me to the verge of vomiting(dont worry though, I'm the only one of my friends to find the taste that bad so I think its just me).