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Standard Dilutions [Amount of drug] [Infusion volume] [Infusion rate]
| [0 to 1 gram] [50 ml] [30 min]
[Over 1 gram] [100 ml] [60 min]
Stability / Miscellaneous
| Reconstituted parenteral solution is stable for 3 days at room temperature and 7 days when refrigerated or 12 weeks when frozen; for I.V. infusion in NS or D5W, solution is stable for 24 hours at room temperature and 96 hours when refrigerated
Mild to moderate infection: 500mg to 1 gram ivpb q4h or 1-2g ivpb q6h.
Renal dosing: No dosage changes required for renal failure.
INDICATIONS AND USAGE
Nafcillin may be used to initiate therapy in suspected cases of resistant staphylococcal infections prior to the availability of susceptibility test results. Nafcillin should not be used in infections caused by organisms susceptible to penicillin G. If the susceptibility tests indicate that the infection is due to an organism other than a resistant Staphylococcus, therapy should not be continued with Nafcillin Injection, USP.
To reduce the development of drug-resistant bacteria and maintain the effectiveness of Nafcillin Injection, USP and other antibacterial drugs, Nafcillin Injection, USP should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
Solutions containing dextrose may be contraindicated in patients with known allergy to corn or corn products.
Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including Nafcillin Injection, USP, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile.
C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibiotic use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents.
If CDAD is suspected or confirmed, ongoing antibiotic use not directed againstC. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibiotic treatment of C. difficile, and surgical evaluation should be instituted as clinically indicated.
DOSAGE AND ADMINISTRATION
Nafcillin-probenecid therapy is generally limited to those infections where very high serum levels of nafcillin are necessary.
No dosage alterations are necessary for patients with renal dysfunction, including those on hemodialysis. Hemodialysis does not accelerate nafcillin clearance from the blood.
For patients with hepatic insufficiency and renal failure, measurement of nafcillin serum levels should be performed and dosage adjusted accordingly.
With intravenous administration, particularly in elderly patients, care should be taken because of the possibility of thrombophlebitis.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.
Do not add supplementary medication to Nafcillin Injection, USP.
Store in a freezer capable of maintaining a temperature of -20°C (-4°F) or less.
2G3540 NDC 0338-1017-41 1 gram nafcillin in 50 mL
Store at or below -20°C/-4°F.
Source: [package insert]