Compositions for treating affected tissues, method for the preparation and usage thereof
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United States of America Patent
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May 12, 1998
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N/A
app pub date -
May 28, 1996
filing date -
Sep 18, 1992
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Abstract
Injectable compositions for treating affected tissues are prepared by formulating sodium hydrogen sulfite with all other components except tannic acid to yield a first mixture and adding tannic acid to the first mixture, or, by formulating a water-soluble aluminum compound and a chelating agent to yield a first formulation, formulating tannic acid and sodium hydrogen sulfite to yield a second formulation and admixing the first formulation with the second formulation to yield a second mixture and, as needed, adding a polyvalent alcohol and/or a saccharide to the first and/or second formulations or to the first or second mixture, thereby formulating the injectable composition having a pH range of from pH 1.0 to pH 3.5. This preparation can prevent the oxidation of tannic acid and the direct reaction with aluminum ions derived from sodium hydrogen sulfite, whereby the composition can provide a stable formulation as well as ensure effectiveness as an injectable preparation in a solution form.
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