"Indiscriminate use of the product can cause side effects such as inflammation of the salivary glands, nausea,rashes,intestinal upset and possible severe allergic reactions.

VOA: special.2011.03.30

So, anything on the left side of the equation is called a reactant, and anything on the right side of the equation is called a product.

在方程的左边的,都称为反应物，在方程右边的,都称为产物。

麻省理工公开课 - 固态化学导论课程节选