Formula and preparation method of an improved ointment for treating burns and scalds
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United States of America Patent
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Oct 22, 2002
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N/A
app pub date -
Aug 3, 2000
filing date -
May 5, 2000
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Abstract
The invention discloses an extract containing puccoon and Chinese angelica, and a formula and preparation method of an ointment containing the extract. The extract is used for treating burns and scalds and is characterized by superior shelf-life. The puccoon and Chinese angelica are extracted with an organic solvent having a polarity of between 0.35 and 0.95, which are then filtrated, concentrated and mixed with a physiologically acceptable carrier or excipient.
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