但是，如果产品或疗法的质量低劣，或者用法不当或与其他药物结合使用，则传统药物和措施可能导致有害的不良反应。
However, traditional medicines and practices can cause harmful, adverse reactions if the product or therapy is of poor quality, or it is taken inappropriately or in conjunction with other medicines.
使用正常剂量的药物进行治疗时出现的非预期有害反应，称作药品不良反应(adr)。
Harmful, unintended reactions to medicines that occur at doses normally used for treatment are called adverse drug reactions (ADRs).
对药物产生的非预期、有害反应(称作药品不良反应)位居许多国家主要死因之列。
Unintended, harmful reactions to medicines (known as adverse drug reactions) are among the leading causes of death in many countries.
药物在防治疾病的同时也会产生对机体有害的作用和不期望产生的作用，即药物不良反应。
Medicine prevents and cures diseases, but on the other hand, it also exerts the unexpected effect which is harmful to organism at the same time, and this is called adverse reaction.
药物在防治疾病的同时也会产生对机体有害的作用和不期望产生的作用，即药物不良反应。
Medicine prevents and cures diseases, but on the other hand, it also exerts the unexpected effect which is harmful to organism at the same time, and this is called adverse reaction.
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