Journal
JOURNAL OF PHARMACEUTICAL SCIENCES
Volume 91, Issue 11, Pages 2283-2300Publisher
ELSEVIER SCIENCE INC
DOI: 10.1002/jps.10154
Keywords
parenteral; excipients; formulation; stabilizers; solubilizers; antimicrobial preservatives; packaging
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Excipients are added to parenteral formulations to enhance or maintain active ingredient solubility (solubilizers) and/or stability (buffers, antioxidants, chelating agents, cryo- and lyoprotectants). Excipients also are important in parenteral formulations to assure safety (antimicrobial preservatives), minimize pain and irritation upon injection (tonicity agents), and control or prolong drug delivery (polymers). These are all examples of positive or synergistic interactions between excipients and drugs. However, excipients may also produce negative effects such as loss of drug solubility, activity, and/or stability. This review article will highlight documented interactions, both synergistic and antagonistic, between excipients and drugs in parenteral formulations. The reader will gain better understanding and appreciation of the implications of adding formulation ingredients to parenteral drug products. (C) 2002 Wiley-Liss, Inc. and the American Pharmaceutical Association.
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