IU的意思是international standard.
"It is used for the measurement of drugs and vitamins."
IU的定义:
“Webster's defines IU as: a quantity of a biologic (such as a vitamin) that produces a particular biological effect agreed upon as an international standard
What this means is that IU is dependent on the potency of the substance, and each substance would have a
different IU to milligram conversion. For example, 1000 IU of Vitamin C would have a different weight
than 1000 IU of Vitamin A“
针对VE来说,IU与mg之间的转换公式看到两个,这里的换算按照下面的公式:1 IU = 0.67 mg tocopherol equivalent(最有效的VE成分)