This is also related to the units that are used. Additives can be expressed in International Units / kg of g / kg. Using the International Unit takes into account the effectiveness of the compound. Internationl units are used for vitamine A, vitamine D3. | This is also related to the units that are used. Additives can be expressed in International Units / kg of g / kg. Using the International Unit takes into account the effectiveness of the compound. Internationl units are used for vitamine A, vitamine D3. |