Ref: Renal Drug Database - please note some doses below are off license

To get access to the Renal Drug Database - email knowledge@nes.scot.nhs.uk to request an individual login.

  • Nitrofurantoin should be avoided in patients with CKD 4 or 5 i.e. if eGFR<30 as won't achieve therapeutic concentrations in bladder urine.
  • Trimethoprim can cause a temporary increase in serum potassium and creatinine during treatment. Avoid in patients with higher baseline potassium.

Ensure urine culture samples mention CKD 4 or 5 in clinical details so lab are aware when authorising sensitivity testing results.

Drug details

CKD 4

Trimethoprim (with caution) 

 

200mg BD

 

5 days

or  Cefalexin

500mg BD

5 days

or Fosfomycin

3g

Female single dose

Male two doses 72hr apart

CKD 5

Cefalexin

 

500mg OD

 

5 days

or Fosfomycin

Only if eGFR >10ml/min

3g

Female single dose

Male two doses 3 days apart

or Pivmecillinam

(unlikely to be effective in patients with little residual kidney function)

400mg initially then 200mg TDS

5 days