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Cilastatin / Imipenem Dosage

Medically reviewed by Drugs.com. Last updated on Sep 7, 2023.

Applies to the following strengths: 250 mg-250 mg; 500 mg-500 mg; 750 mg-750 mg

Usual Adult Dose for Bacteremia

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Endocarditis

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Intraabdominal Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Joint Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Osteomyelitis

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Pneumonia

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Pyelonephritis

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Septicemia

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Bacterial Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Urinary Tract Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Bronchitis

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Pelvic Infections

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Endometritis

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Uses: For the treatment of:

Usual Adult Dose for Skin or Soft Tissue Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Use: For the treatment of skin and skin structure infections due to susceptible strains of E faecalis, S aureus (penicillinase-producing isolates), S epidermidis, Acinetobacter species, Citrobacter species, Enterobacter species, E coli, Klebsiella species, M morganii, P vulgaris, P rettgeri, P aeruginosa, Serratia species, Peptococcus species, Peptostreptococcus species, Bacteroides species (including B fragilis), Fusobacterium species

Infectious Diseases Society of America (IDSA) Recommendations:


Comments:

Usual Adult Dose for Skin and Structure Infection

If infection suspected/proven due to susceptible bacterial species: 500 mg (imipenem component) IV every 6 hours OR 1 g (imipenem component) IV every 8 hours

If infection suspected/proven due to bacterial species with intermediate susceptibility: 1 g (imipenem component) IV every 6 hours

Use: For the treatment of skin and skin structure infections due to susceptible strains of E faecalis, S aureus (penicillinase-producing isolates), S epidermidis, Acinetobacter species, Citrobacter species, Enterobacter species, E coli, Klebsiella species, M morganii, P vulgaris, P rettgeri, P aeruginosa, Serratia species, Peptococcus species, Peptostreptococcus species, Bacteroides species (including B fragilis), Fusobacterium species

Infectious Diseases Society of America (IDSA) Recommendations:


Comments:

Usual Adult Dose for Nosocomial Pneumonia

IDSA and American Thoracic Society Recommendations: 500 mg IV every 6 hours
Duration of therapy: 7 days

Comments:

Usual Adult Dose for Peritonitis

International Society for Peritoneal Dialysis (ISPD) Recommendations:
Continuous (all exchanges):


Intermittent (1 exchange daily): 500 mg intraperitoneally in alternate exchange

Comments:

Usual Pediatric Dose for Bacteremia

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Endocarditis

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Intraabdominal Infection

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Joint Infection

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Osteomyelitis

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Pneumonia

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Pyelonephritis

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Septicemia

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Bacterial Infection

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Urinary Tract Infection

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Skin and Structure Infection

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Bronchitis

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Pelvic Infections

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Endometritis

Less than 1 week, at least 1500 g: 25 mg/kg (imipenem component) IV every 12 hours
1 to 4 weeks, at least 1500 g: 25 mg/kg (imipenem component) IV every 8 hours
4 weeks to 3 months, at least 1500 g: 25 mg/kg (imipenem component) IV every 6 hours
3 months or older: 15 to 25 mg/kg (imipenem component) IV every 6 hours
Maximum dose: 4 g/day

Comments:


Uses: For the treatment of:

American Academy of Pediatrics Recommendations:
7 days or younger: 25 mg/kg IV every 12 hours
Greater than 7 days: 25 mg/kg IV every 8 hours
1 month or older: 15 to 25 mg/kg IV 4 times a day
Maximum dose: 4 g/day

Comments:

Usual Pediatric Dose for Peritonitis

ISPD Recommendations:
Continuous:


Comments:

Renal Dose Adjustments

Adult patients:
If infection suspected/proven due to susceptible bacterial species:


If infection suspected/proven due to bacterial species with intermediate susceptibility:

Pediatric patients less than 30 kg:

Comments:

Liver Dose Adjustments

Data not available

Precautions

CONTRAINDICATIONS:
Hypersensitivity to either active component or to any of the ingredients

Consult WARNINGS section for additional precautions.

Dialysis

Adult patients:
CrCl less than 15 mL/min undergoing hemodialysis:


Peritoneal dialysis: Data not available

Comments:

Other Comments

Administration advice:


Storage requirements:

Reconstitution/preparation techniques:

IV compatibility:

General:

Monitoring:

Patient advice:

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.