Open Access A new formulation concept for drugs with poor water solubility for parenteral application

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The parenteral application of active substances with poor solubility in water is often bound to the use of stabilizing excipients or surfactants with serious undesired side effects. A new concept is introduced based on a drug concentrate, comprising the active substance dissolved in parenterally acceptable organic solvents, and an aqueous dilution medium, which are mixed in a special mixing device immediately prior to application and thus generating the applicable formulation directly prior to administration. Due to the requirement of formulation stability for only a few minutes, the amount of stabilizing agents can be reduced significantly. It can be shown that model drugs dissolved in a mixture of polyoxyethylen glycol, ethanol and soya lecithin as stabilizer may be mixed to an aqueous glucose solution resulting in a parenterally acceptable and administerable dispersion which is physically stable for several minutes. First in vivo data show good tolerability and blood plasma levels which are comparable to conventional solutions.

Document Type: Research Article

Affiliations: 1: Department for Pharmaceutics and Biopharmaceutics, Christian-Albrecht-University Kiel, Kiel, Germany 2: Department for Pharmaceutics and Biopharmaceutics, Christian-Albrecht-University Kiel, Gutenbergstraße 76, Kiel, 24118, Germany, Email:

Publication date: September 1, 2005

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  • Pharmazie is one of the world's leading pharmaceutical journals. As a peer-reviewed scientific journal, DiePharmazie is regularly indexed in Current Contents/Life Sciences, Excerpta Medica, Analytical Abstracts, International Pharmaceutical Abstracts, Beilstein Current Facts in Chemistry, Chemical Engineering and Biotechnology Abstracts (CEABA) and Science Citation Index.
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