PROBLEM TO BE SOLVED: To inexpensively prepare various drugs with low stability.SOLUTION: A system for providing drugs includes: a slot to which a kit 1a can be attached and detached, the kit including a raw ingredient space 11a into which a raw ingredient of a drug is filled and a reactor 13 for mixing the raw ingredient that flows from the raw ingredient space 11a with another raw ingredient a raw ingredient-feeding mechanism that moves the raw ingredient within the raw ingredient space 11a to the reactor 13 in the kit 1a in which blocking means has been released to mix the raw ingredients within the kit 1a and a collection mechanism that collects the drug within the reactor 13 prepared by mixing the raw ingredients from the kit 1a.COPYRIGHT: (C)2015,JPO&INPIT