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Creatinine Clearance (CrCl) Dosage Adjustment for Varying Degrees of Renal Dysfunction

Drug

% Removed by

Renal Clearance

CrCl

50–79 ml/min

CrCl

30–49 ml/min

CrCl

10–29 ml/min

CrCl

<10 ml/min

Post HD#

dose

Acyclovir (po)

50 to 75%

200-800mg 5x/d

200-800mg q6h

200-800mg q8h

200-800mg q12h

1 dose

Acyclovir (iv)

50 to 75%

5mg/kg q8h

5mg/kg q12h

5mg/kg q24h

2.5mg/kg q24h

1 dose

Amantadine

> 75%

100mg q24h

100mg q24h

100mg q72h

100mg q7days

none

Ampicillin

50 to 75%

1g q6h

1g q8h

1g q12h

1g q12-24h

1 dose

Amp/sulbactam

50 to 75%

1.5-3g q6-8h

1.5-3g q6-8h

1.5-3g q12h

1.5-3g q24h

1 dose

Aztreonam

50 to 75%

1-2g q8h

1-2g q8h

1-2g q12h

1-2g q24h

1/8 dose

Cefaclor

> 75%

500mg q8h

500mg q8h

250mg q8h

250mg q8h

250mg

Cefazolin

> 75%

1g q8h

1g q12h

500mg q12h

1g q24-48h

0.5-1g

Cefepime

> 75%

0.5-2g q12h**

0.5-2g q24h

0.5-1g q24h

0.25-0.5g q24h

1 dose

Cefotaxime

25 to 75%

1-2g q8-12h

1-2g q8-12h

1-2g q12h

1-2g q24h

1g

Cefoxitin

> 75%

1-2g q6-8h

1-2g q8-12h

1-2g q12-24h

1-2g q24-48h

1-2g

Cefpodoxime

> 75%

100-200mg q12h

100-200mg q12h

100-200mg q24h

100-200mg q24h

none

Ceftazidime

> 75%

1-2g q8-12h

1-2g q12h

1-2g q24h

1-2g q48h

1g

Cefuroxime

> 75%

0.75-1.5g q8h

0.75g q8h

0.75g q12h

0.75g q24h

1 dose

Cephalexin

> 75%

250-500mg q6h

250-500mg q8h

250-500mg q12h

250-500mg q12h

1 dose

Cimetidine (iv/po)

50 to 75%

300mg q6-8h

300mg q12h

300mg q24h

300mg q24h

none

Ciprofloxacin (po)

50 to 75%

500-750mg q12h

500-750mg q12h

500-750mg q24h

500mg q24h

none

Ciprofloxacin (iv)

50 to 75%

200-400mg q12h

200-400mg q12h

200-400mg q24h

200mg q24h

none

 

Famotidine (iv/po)

50 to 75%

20mg q12h

20mg q12h

20mg q12h

20mg q24h

none

Fluconazole

50 to 75%

100-400mg q24h

100-400mg q24h

50-200mg q24h

50-100mg q24h

1 dose

Flucytosine

> 75%

37.5mg/kg q6h

37.5mg/kg q12h

37.5mg/kg q18h

37.5mg/kg q24h

1 dose

Gancyclovir

50 to 75%

2.5mg/kg q12h

2.5mg/kg q24h

1.25mg/kg q24h

1.25mg/kg q48-96h

1 dose

Imipenem/cilastat.

50 to 75%

500mg q6h

500mg q8h

500mg q12h

250mg q12h

1 dose

Levofloxacin

> 75%

500mg q24h

250mg q24h

250mg q36h

250mg q48h

250mg

Nizatadine (treat)

50 to 75%

150mg q12h

150mg q24h

150mg q24h

150mg q24h

unknown

Nizatadine (maint)

50 to 75%

150mg q12h

150mg q48h

150mg q48h

150mg q72h

unknown

Penicillin

50 to 75%

2mU q4h

1.5mU q4h

1mU q4h

0.5mU q4h

0.5mU

Pentamidine

< 25%

4mg/kg q24h

4mg/kg q24-36h

4mg/kg q24-36h

4mg/kg q48h

none

Piperacillin

50 to 75%

3-4g q4-6h

3-4g q8h

3-4g q8-12h

3-4g q12h

1g dose

Pip/tazocactam

50 to 75%

3.375-4.5g q6h

2.25-3.375g q6h

2.25g q6-8h

2.25g q8h

0.75g dose

Ranitidine (po)

50 to 75%

150mg q12h

150mg q24h

150mg q24h

150mg q24h

1/2 dose

Ranitidine (iv)

50 to 75%

50mg q8h

50mg q18-24h

50mg q24h

50mg q24h

1/2 dose

TMP/SMZ (iv/po)

25 to 75%

normal dose

normal dose

1/2 normal dose

1/2 normal dose q24

1 dose

Tetracycline

50 to 75%

500mg q6h

500mg q8-12h

avoid use

avoid use

none

Ticarcillin/clav

> 75%

3.1g q6h

3.1g q6-8h

3.1g q8-12h

3.1g q12h

1 dose

#HD = Hemodialysis

**adjust when CrCl falls below 60ml/min

CrCl=(140-age) (IBW in kg)

72 (serum Cr)

*multiply by 0.85 for females

If creatinine clearance is > 80 ml/min, use normal dose

Adapted from Drug Facts & Comparison. 1992:328-411 and Bennett, WM, Aronoff, GR et. al. Drug Prescribing in Renal Failure: Dosing for Adults. 3rd ed. 1994:18-79. AHFS Drug Information. 1996.



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