Red Potion is composed primarily of organic mercury and is a topical disinfectant for medical use. Red Potion is a mercury bromide solution that can be used to disinfect and antiseptic the surface of the skin, the active ingredient is organic mercury. The active ingredient is organic mercury. Its medicinal principle is that organic mercury releases mercury ions to combine with proteins to precipitate, so as to achieve the effect of astringent antiseptic. However, red potion has no effect on bacterial spores, so it can only be used for disinfection of skin surface, as well as disinfection of mucous membrane wounds and local disinfection before surgery. It should be noted that red potion should not be used together with iodine-containing solutions such as povidone-iodine and tincture of iodine, as the combination of the two may produce toxic mercuric iodide. In addition to this, the disinfection of large wounds is also not suitable for the use of red potion, previous allergy to mercury patients are also prohibited red potion, should follow the doctor’s instructions for the use of medication.