What does cupric oxide do in the body?

Answer 1

Copper(II) oxide is an irritant. It also can cause damage to the endocrine and central nervous system. Contact to the eyes or skin can cause irritation. Ingesting cupric oxide powder can result in a metallic taste, nausea, vomiting and stomach pain. In more severe cases, there may be blood in vomit or black or tarry stools, jaundice and enlarged liver. Blood cells rupture resulting in circulatory collapse and shock. Inhalation can lead to damage to the lungs and septum. Inhalation of fumes during smelting of cupric oxide powder can lead to a disease called metal fume fever, which can result in flu like symptoms.

In other words if you have eaten any of the chemicals - see a Dr

Answer 2

Cupric oxide is primarily used as a colorant or pigment in ceramics and glass. In the body, high doses of cupric oxide can be toxic, causing gastrointestinal irritation and other health issues. It is not used for any physiological functions or benefits in the body.