Also kInda goes wIthout sayIng, but maybe not, that you don't want to physically chop a CR or SR or XR type pill in half cuz they have a special coating on them. You're supposed to swallow them whole, not chew them or anything, and the special coating dissolves later to release more medication. Personally I never trust them cuz I feel I can't trust my internal processes that much!! So I try to stick with regular drugs!