Iodine

Lethal dose: 2-3 g Symptoms: brown staining and language of the mouth, vomiting brown and blue masses (if the stomach contents are starch), diarrhea. Headache, runny nose, skin rash. Irritation of the mucosa of the respiratory tract. In severe cases - pulmonary edema, convulsions, small rapid pulse, coma.
First Aid: gastric lavage, inside - liquid starch or flour paste large amounts of milk, slimy drink a laxative, magnesia (magnesium oxide).
Treatment: In 1% solution of sodium thiosulfate in an amount of 250-300 ml. Symptomatic therapy, treatment of the digestive tract burns.