An anti-tachyarrhythmia corydalis tuber extract, the extract being prepared using the following method: using ethanol to extract corydalis tuber coarse powder, concentrating the filtrate under reduced pressure to obtain a fluid extract, adding treated D101 resin and the prepared fluid extract into a column, removing impurities with deionized water, eluting with ethanol, recovering the ethanol, and concentrating to obtain corydalis tuber dry extract.
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