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Many medicine are distinguished into eating before or after meals, so that it is diffcult to differentiate when the medicine or medicine bottles look the same. The "partner" can easily make distinct between medicine taken before meals and after meals by means of concavo-convex bottle cap,representing empty stomach and full state respectively.The concavo-convex bottle cap can be distinguished by tactile sensation,which is suitable for the ordinary people as well as the sight impaired.
Xizhen Shen, Yaer Fang, Yuejing Dong, Jiexiang Fan