People made millions bottles every year to conserve medical pills, but its cannot be reused, so they just become trashes, which usually contaminant our environment, at the same time, those pills has its time of expiration, but it is difficult for an elder or a visually impaired person to remember or recognize, so tragedy that they take the pills after its expiration seems to happen with high?frequency. The design uses the PLA environmentally friendly corn plastic to make the bottle; it will generate bumps on the surface with the passage of the time after you open the seal, so the user can notice that the pills are out of the date when the bottle is inflated?