It is part of the ingredient if there is some sediment on the bottom of the bowel or the bag, which does not effect the cure result without any harmful side effect.
服药时若发现碗底或袋底有部分沉淀，此为饮片成分，不影响疗效，服入不会产生不良反应。
The experience depends on clinic experiments and statistics, which though not absolutely precise can also perfect itself by canceling non effective or harmful side effect herbs.
而经验是建立在试验和统计的基础上，在某些方面有可能做得不一定非常准确，但其逻辑是可以进行调整，没有用的药或者副作用大的药会被取消，或者被减量，这就是试错。
Harmful accident and side effect: The cases with harmful effects in Chinese herb group were less than western drug group (1 case, 7 cases).
不良事件和副反应：中药组不良反应例数低于西药组(1例，7例)。
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