药物不良反应是指药物使用治疗量后出现的与用药目的不一致的反应。不良反应包括副作用、毒性反应、后遗反应、过敏反应、变态反应、致癌、致畸和致突变作用等。其中后遗反应比较轻,是可逆的,停药后就能消失。但其余不良反应有可能引起严重的、对机体造成不可逆的损害。家庭用药多为非处方用药,在没有专业人员指导的情况下,常会因为药物选择不合理,用法、用量 Adverse drug reactions refer to those reactions that appear inconsistent with the intended purpose of the drug after the drug is administered. Adverse reactions include side effects, toxic reactions, posterior reactions, allergic reactions, allergic reactions, carcinogenesis, teratogenic and mutagenic effects. Which after the reaction is relatively light, is reversible, can disappear after stopping. However, the remaining adverse reactions may cause serious, irreversible damage to the body. Family medicine mostly non-prescription medication, in the absence of professional guidance, often because of drug choices unreasonable, usage, dosage