AIM:To prepare sustained release matrine tablet,and study its drug release test in vitro. METHODS: In combination with HPLC,we studied the cumulative matrine release using HPLC and EC as the sustained materials. RESULTS: The release of matrine was conformed to Higuchi equation. CONCLUSION: The drug release behavior could be well described in vitro,and meet the design criteria,it is easy to be produced.
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