Topical Side effects may include irritation of the skin and discoloration of clothing. A harsh burn on a child from an undissolved tablet has been reported. For treating eczema, it is recommended using for a few days at a time due to the possibility of it irritating the skin. Higher concentration solutions can result in chemical burns. Therefore, the British National Formulary recommends 100 mg be dissolved in a liter of water before use to form a 1:10,000 (0.01%) solution. Wrapping the dressings soaked with<unk> is not recommended. By mouth If taken by mouth it is deemed to be very toxic. Side effects may include nausea, vomiting, and shortness of breath may occur. If a sufficiently large amount (about 10 grams) is eaten death may occur. Concentrated solutions when drunk have resulted in adult respiratory distress syndrome or swelling of the airway. Recommended measures for those who have ingested<unk> include gastroscopy. Activated charcoal or medications to cause vomiting are not recommended. While medications like ranitidine and N-acetylcysteine may be used in toxicity, evidence for this use is poor.
Potassium permanganate 
Sodium thiosulfate 
Amylmetacresol
Sodium hydroxide
Sodium hypochlorite
Barium sulfate suspension
Hydrochloric acid
Aluminum chloride hexahydrate