Drug reactions mnemonic

Common culprit drugs in SJS/TEN

The mnemonic

ALCAN

What each word stands for

  • AAllopurinol
  • LLamotrigine
  • CCarbamazepine
  • AAntibiotics, particularly sulfonamides
  • NNevirapine and NSAIDs such as oxicams

Why it matters clinically

Helps recall the likely culprit drug.

Where it stops being reliable

Other drugs, including phenytoin, also cause SJS/TEN.

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

More mnemonics

Common questions

What is the Drug reactions mnemonic?

ALCAN. It helps you recall: Common culprit drugs in SJS/TEN.

What does "A" stand for?

Antibiotics, particularly sulfonamides

What does "L" stand for?

Lamotrigine

What does "C" stand for?

Carbamazepine

What are all the parts of the ALCAN mnemonic?

A: Allopurinol; L: Lamotrigine; C: Carbamazepine; A: Antibiotics, particularly sulfonamides; N: Nevirapine and NSAIDs such as oxicams.

Which topic does this mnemonic belong to?

It belongs to Drug reactions in Dermatology.

Where does this mnemonic stop being reliable?

Other drugs, including phenytoin, also cause SJS/TEN.

How is this useful clinically?

Helps recall the likely culprit drug.

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 Dermatology question about Drug reactions.

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.