A 35-year-old female patient has been hospitalized with acute intoxication caused by salts of high-density metals (lead, most probably). As a part of complex therapy the antidote that contains two active sulfhydric groups has been prescribed. Specify this antidote:

Answer options

1. Dimercaprol
2. Metamizole
3. Nalorphine hydrochloride
4. Calcium chloride
5. Mannitol

Explanation

Dimercaprol is a chelating agent that is used to remove a heavy metal (such as lead or mercury) from the blood. Metamizole acts as an antispasmodic and antipyretic. Mannitol is a diuretic. Nalorphine is an opioid. CaCl is used for Mg toxicity.