XANAX question for users or anyone who might know?

ive been on xanax for a long time but sometimes when i go 2 pick up my xanax they give me an alternative brand of xanax...with different lettering and markings on them...same color tho but different brand..MY question is does it really matter what company makes the xanax...?...is xanax, xanax...?...because in the last 3 months ive gotten 5+ different manufactures of it...i havnt noticed a difference...just wondering if u had any thoughs...cause the pharmacy said "xanax is xanax, doesnt matter which manufacturer makes it"....?