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Sodium thiosulfate (medical use)

Sodium thiosulfate
Sodium thiosulfate.svg
Sodium thiosulfate, structural formula
Clinical data
Trade names Versiclear, others
AHFS/Drugs.com Micromedex Detailed Consumer Information
Pregnancy
category
  • US: C (Risk not ruled out)
ATC code
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
ChEBI
Chemical and physical data
Formula Na2S2O3
Molar mass 158.108
3D model (JSmol)

Sodium thiosulfate, also spelled sodium thiosulphate, is used as a medication to treat cyanide poisoning, pityriasis versicolor, and to decrease side effects from cisplatin. For cyanide poisoning it is often used after the medication sodium nitrite and typically only recommended for severe cases. It is either given by injection into a vein or applied to the skin.

Side effects may include vomiting, joint pain, mood changes, psychosis, and ringing in the ears. Safety; however, has not been well studied. It is unclear if use in pregnancy is safe for the baby. Use at the same time in the same intravensous line as hydroxocobalamin is not recommended. In cyanide poisoning sodium nitrite creates methemoglobinemia which removes cyanide from . Sodium thiosulfate then binds with cyanide creating the nontoxic thiocyanate.

Sodium thiosulfate came into medical use for cyanide poisoning in the 1930s. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system. The cost in the United States per dose as of 2013 is about 20 USD while together with sodium nitrite it costs 110 USD.

The main use of sodium thiosulfate is in cyanide poisoning and pityriasis versicolor.

In cyanide poisoning there are concerns that sodium thiosulfate may not have a fast enough onset of action to be very useful without the additional use of other agents.

In those who have both cyanide poisoning and carbon monoxide poisoning sodium thiosulfate by itself is recommended.


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