Would these be IR (Immediate Release) tablets or SR (Sustained Release) capsules?

If you just wanna concentrate a little better start with one, if you want to achieve any sort of high go with two or three. Capsules, open them up wrap the little balls in pre-chewed gum and then continue to chew and try to break up the little balls.

The effects are stimulation, reduced appetite, clearer thinking and a general "cracked out" feeling.