何处买药最安全？张涛从外地来到北京的陈先生现在一家小公司做推销员，工作十分忙碌。前一阵他突然腹泻，就去一家路边的药店买了一瓶售货员推荐的抗生素药。没有说明书，药瓶上的标签也非常简单，除了几个“××菌”的术语，“用法与用量”写着“一日１－２ｇ，分３－４... Where to buy medicine the safest? Mr. Zhang, who came to Beijing from the field, is now a salesman with a small company and he is very busy with work. Before a while he suddenly diarrhea, went to a roadside pharmacy bought a bottle of salesman recommended antibiotics. No instructions, the label on the bottle is also very simple, in addition to a few “× × bacteria” terminology, “usage and dosage” reads "1-2 day, divided 3-4 ...