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Medicines colistimethate sodiumQuestion & answer

colistimethate sodium · Medicine question

Is colistimethate sodium the same as colistin?

iatroX medicinesPublished 19 August 2026Reviewed 19 August 2026

The answer

Answer

Not exactly. Colistimethate sodium is a prodrug converted into the active antibiotic colistin.

Sources for this answer

Colomycin (Colistimethate Sodium) 1 MIU Powder for Injection, Infusion or Inhalationemc · SmPC Current selected SmPC · Version 7
Promixin 1 million International Units (IU) Powder for Nebuliser Solutionemc · SmPC Current selected SmPC · Version 15

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colistimethate sodium

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