Appendix 1 - Antibiotic administration and dose reduction in renal impairment summary (H@H)
Drug |
Administration |
Dosage reduction in renal impairment |
Availability of suspension |
Additional information |
Amoxicillin |
Dilute the IV dose to 100mL in sodium chloride 0.9% and give by infusion over 30 to 60 minutes |
No dose reduction required with initial STAT IV dose at any level of renal impairment.
|
Amoxicillin 250mg/5ml (100ml) |
|
Clarithromycin |
Oral only
|
No reduction to oral doses. |
Clarithromycin 250mg/5ml (70ml) |
Check BNF for interactions, particularly with statins, warfarin, quinolones and steroids |
Co-trimoxazole |
Oral only
|
Use half normal dose (480mg twice daily) if Avoid if eGFR less than 15 mL/minute/1.73 m2 |
Co-trimoxazole suspension 480mg/5ml |
|
Doxycycline |
Oral |
No dose reduction required. |
Dispersible tablets (100mg) |
Swallow with plenty fluid in upright position. If gastric irritation - give with food or milk. |
Flucloxacillin |
Oral |
No reduction to oral doses. |
|
30 minutes to 1 hour before meals |
Fosfomycin |
Oral |
Contraindicated if CrCl <10ml/min (due to prolonged half-life) |
|
Dissolve granules in water and take immediately, on an empty stomach (about 2–3 hours before or after a meal), ideally before bedtime, after emptying the bladder. |
Gentamicin |
IV infusion: Give over 30 minutes as per the NHS Lothian Gentamicin Policy. Dilute with 50 to 100ml Sodium Chloride 0.9% or Glucose 5% |
Use calculator |
n/a |
|
Metronidazole |
Oral / PR |
No dose reduction required. |
Metronidazole 200mg/5ml (100ml) Suppositories 1g |
With/ after food, with water. Avoid alcohol. |
Nitrofurantoin |
Oral |
In patients with an eGFR of less than 45 ml/minute. Nitrofurantoin may be used with caution for short-course therapy only in uncomplicated lower urinary tract infection, with eGFR 30-44 ml/min to treat resistant pathogens, when the benefits are expected to outweigh the risks. |
Do not use suspension due to cost >£400. Non m/r formulation may be more appropriate for some patients. |
With food or meals |
Pivmecillinam |
Oral |
No dose reduction required. |
|
Tablets should be swallowed whole with plenty of fluid during meals while sitting or standing. |
Teicoplanin |
See NHS Lothian IV handbook for reconstitution guidance: Doses ≤800mg as IV infusion in 100ml over 30 minutes Doses ≥800mg as IV infusion in 100ml over one hour |
The teicoplanin dosing regimen adapted for H@H is based on the patient creatinine clearance.
|
n/a |
Note while OPAT may bolus doses this is not advised for H@H situations. The H@H teicoplanin regimen is not for deep-seated infections- if this is a concern please contact an infection specialist. |
Trimethoprim |
Oral |
Use half normal dose after 3 days if eGFR 15–30 mL/minute/1.73 m2. Raised serum creatinine and blood urea nitrogen levels. Use half normal dose if eGFR less than 15 mL/minute/1.73 m2.(BNF) Note: Trimethoprim inhibits the tubular creatinine secretion leading to a rapid but reversible increase in serum creatinine, independent of any changes in GFR. This translates into falsely low estimates of GFR when creatinine based equations are used. See publication below. |
Trimethoprim suspension 50mg/5ml (100ml) |
Causes hyperkalaemia |