GlobalRPh RX List - POLYMYXIN B
- Product / population
- Polymyxin B - systemic injection; selected renal passages, not a complete prescribing monograph.
- Renal measure
- Qualitative renal statement; no numerical renal-function threshold inferred.
RX mirror: this is not independent corroboration of its underlying label. Check dated-label and formulation limitations.
Source disagreement: this mirror is not displayed as an uncontested renal dosing standard.
Renal dosing, restrictions and evidence limits
The RX label mirror directs dose reduction in renal damage with nitrogen retention. Its IV paragraph describes a normal-function total of 15,000-25,000 units/kg/day, then directs reduction downward from 15,000 units/kg/day in kidney impairment without a CrCl-specific table. Falling urine output with rising BUN is a reason to discontinue in the warning. This source conflicts with separately attributed UNMC guidance recommending no renal adjustment. Do not construct a compromise dose or confuse polymyxin B with colistimethate. Specialist adjudication is required before selecting a systemic regimen.