Red mercury and iodophor should not be used together because in chemistry, the mercury ions in red mercury and the iodine ions in iodophor can interact to produce mercury iodide, but mercury iodide is a highly toxic substance, so red mercury and iodophor should never be used together. If the local wound or skin or mucous membrane is irritated, it will cause local pain and chemical burns. Iodophor is a more common clinical disinfectant, less irritating than alcohol, and can be used for skin disinfection, but it is important to check the expiration date when using iodophor to ensure that it is used within the expiration date. In general, disinfection with iodophor is fine, there is no need to use red mercury, improper use can lead from the wound into the blood circulation stage, thus invading multiple organs throughout the body, which can cause dizziness, headache, nausea and vomiting in the central nervous system.