Toxicology mnemonic

Cyanide poisoning antidote sequence

The mnemonic

Nitrite then Thiosulphate

What each word stands for

  • NitriteForms methaemoglobin to bind cyanide
  • ThiosulphateConverts cyanide to thiocyanate for excretion

Why it matters clinically

Recalls the classic two-step treatment.

Where it stops being reliable

Hydroxocobalamin is an alternative and is often preferred.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Toxicology mnemonic?

Nitrite then Thiosulphate. It helps you recall: Cyanide poisoning antidote sequence.

What does "Nitrite" stand for?

Forms methaemoglobin to bind cyanide

What does "Thiosulphate" stand for?

Converts cyanide to thiocyanate for excretion

What are all the parts of the Nitrite then Thiosulphate mnemonic?

Nitrite: Forms methaemoglobin to bind cyanide; Thiosulphate: Converts cyanide to thiocyanate for excretion.

Which topic does this mnemonic belong to?

It belongs to Toxicology in Forensic Medicine.

Where does this mnemonic stop being reliable?

Hydroxocobalamin is an alternative and is often preferred.

How is this useful clinically?

Recalls the classic two-step treatment.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a Forensic Medicine question about Toxicology.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.