Considerations in comparing intravenous and intramuscular antibiotics

Area of Science:

• Pharmacoeconomics
• Drug Delivery Systems
• Infectious Disease Management

Background:

• Prospective payment systems and cost containment measures necessitate reevaluation of parenteral drug administration methods.
• Physicians and pharmacists seek cost-effective parenteral product administration strategies.

Purpose of the Study:

• To assess the relative costs and economic efficiencies of intramuscular versus intravenous antibiotic administration.
• To compare total therapy costs, including acquisition, administration, and self-administration expenses.

Main Methods:

• A three-phase approach was used to evaluate antibiotic costs.
• Economic comparisons were made between intramuscular and intravenous routes for cefazolin, gentamicin, penicillin, and imipenem.
• Considerations for both intravenous and intramuscular administration systems were detailed.

Main Results:

• The intramuscular route was found to be significantly more cost-effective than the intravenous route in certain scenarios, up to one-tenth the expense.
• Intramuscular administration may enable earlier hospital discharge and facilitate home self-administration.
• Acquisition, administration, and total self-administration costs were analyzed for comparative therapy assessment.

Conclusions:

• Intramuscular antibiotic injections represent an economically efficient alternative to intravenous administration for appropriate patients.
• The study highlights the potential for substantial cost savings through the judicious use of intramuscular antibiotic therapy.
• Optimizing drug delivery systems can lead to significant healthcare cost reductions and improved patient management.