Furthermore, there are simply too many factors influencing a prescription's medical effectiveness: body type, environment, simultaneous use of other Chinese or Western medicines, etc. Great study is needed just to know how to prepare and cook the herbs and decide upon dosage.
此外，影響療效的原因，如個人體質、環境、中西藥合併服用等影響因素太多，而煎煮方法、劑量控制也都大有學問。