Imipenem + Cilastatin

Trade name

Primaxin

Presentation and preparation

Vial size
(powder volume)
Fluid to add
Volume to add
Resulting concentration

Imipenem 500 mg

Cilastatin 500 mg
(0.8 mL)

Sodium chloride 0.9%

 

9.2 mL

 

50 mg/mL

 

Reconstitute with 9.2 mL sodium chloride 0.9% to provide a 50 mg/mL cloudy suspension. Shake well, withdraw dose and dilute immediately. Do not administer without further dilution.

IV administration

Concentrations refer to the imipenem component.

Caution: Complex infusion preparation; do not administer without further dilution.

Further dilute reconstituted solution to 2.5 to 5 mg/mL and shake well to produce a clear solution.

Doses equal to or less than 500 mg: Give over at least 20 minutes.

Doses more than 500 mg:  Give over at least 40 minutes.

Haemodialysis: Give at the end of haemodialysis.

Other routes of administration

IM: Not recommended.

SC: Not recommended.

Compatible IV fluids

Glucose 5%

Glucose 5% and sodium chloride 0.9%

Glucose 5% and sodium chloride 0.45%

Glucose 10%

Sodium chloride 0.9%

Y-site only and imipenem 5 mg/mL:

Plasma-Lyte 148

Potassium chloride 20 mmol/L

Additional information

Observe closely for anaphylactic reactions.

Monitor patients for infusion reactions e.g. nausea, and reduce rate of administration if not tolerated.

Solution should be colourless to yellow.


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