Pharmacy shelving is a modular racking system that only stands straight if it goes back together the same way. Empty it, disassemble it in order, and bag hardware by bay, because loose shelving is a wobbling hazard.
Pro tip: Take a photo of each assembled bay before teardown so the layout and shelf spacing are easy to rebuild.
Watch out: Never move loaded or fully assembled tall racking; it flexes, tips, and can crush someone. Empty and disassemble first.