Document Detail

Extended stability of intravenous acetaminophen in syringes and opened vials.
MedLine Citation:
PMID:  23135567     Owner:  NLM     Status:  In-Data-Review    
Purpose The stability of i.v. acetaminophen beyond the manufacturer-recommended usage limit of six hours for opened vials was evaluated. Methods Intravenous acetaminophen (10 mg/mL) was obtained. Three identical samples of 100 mg (10 mL in a 10-mL syringe), 250 mg (25 mL in a 30-mL syringe), 500 mg (50 mL in a 60-mL syringe), 250 mg (25 mL in the original vial), and 900 mg (90 mL in original vial) were prepared. A 0.5-mL volume of each sample was withdrawn, diluted with mobile phase to an expected concentration of 50 μg/mL, and assayed in duplicate using high-performance liquid chromatography immediately after preparation and at 24, 48, 72, and 84 hours. The samples were visually inspected for any change in color, and pH was assessed at each time of analysis. The stability of the solutions was determined by calculating the percentage of the initial acetaminophen concentration remaining at each test hour. Stability was defined as the retention of at least 90% of the initial acetaminophen concentration. Results At least 99% of the initial concentration of acetaminophen remained in the original vials and polypropylene syringes throughout the 84-hour study period. There were no detectable changes in color, pH, visible microbial growth, or visible drug precipitation. Conclusion Intravenous acetaminophen (10 mg/mL) was physically and chemically stable in a range of volumes for up to 84 hours in the opened vials and in polypropylene syringes at room temperature. Am J Health-Syst Pharm. 2012; 69:1999-2001.
Jennifer L Kwiatkowski; Cary E Johnson; Deborah S Wagner
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists     Volume:  69     ISSN:  1535-2900     ISO Abbreviation:  Am J Health Syst Pharm     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503023     Medline TA:  Am J Health Syst Pharm     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1999-2001     Citation Subset:  IM    
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