For medicines that require light-protected storage, besides keeping them in opaque containers, what design requirements apply to the premises?

For light-sensitive medicines, opaque original packaging or containers alone are not sufficient; the entire storage environment should take light protection into account. First, the storage area should be kept as far as possible from direct natural light. Windows should be fitted with blackout curtains or blinds, or covered with UV-blocking film. If windows cannot be fully avoided, medicine shelves should be positioned away from them. Second, lighting that does not emit significant amounts of ultraviolet radiation should be used. Traditional fluorescent tubes emit some ultraviolet radiation, which may affect medicine stability over prolonged exposure. LED lighting or other low-UV light sources are recommended. Finally, the relevant Standard Operating Procedures (SOPs) should clearly specify how light-sensitive medicines are to be handled. For example, during picking and packing, their exposure to strong light should be kept as short as possible.