13.11.6 Oxidisers and dyes

1st choicePotassium permanganate solution tablets 400mg (Permitabs®)

1 tablet dissolved in 4 litres of water provides a 0.01% (1 in 10,000) solution

Prescribing Notes

  • Potassium permanganate solution 1 in 10,000, a mild antiseptic with astringent properties, can be used for exudative eczematous areas; treatment should be stopped when the skin area becomes dry. It can stain skin and nails, particularly with prolonged use.
  • The potassium permanganate solution should be made when it is required and disposed of after use.
  • The solution should not be stored in direct sunlight or warm temperatures. The solution can be stored for up to 12 hours, although the manufacturer (Alliance) does not recommend this.
  • If the solution appears cloudy do not use it.


  • There is a risk of death or serious harm from accidental ingestion of potassium permanganate preparations. Refer to NHS warning.