药物治疗是临床上用来治疗疾病最基本的手段 ,不论是口服、舌下含服、皮下注射、肌肉注射、静脉注射、鞘内注射 ,还是直肠给药 ,最终都将进入血液循环 ,而遍布全身 ,药物不仅作用于机体产生治疗效果 ,达到我们所预期的目的 ,同时也产生副作用、毒性反应等不良反应。用药剂量是 Drug therapy is clinically the most basic means of treatment of disease, whether oral, sublingual, subcutaneous, intramuscular, intravenous, intrathecal injection, or rectal administration, will eventually enter the blood circulation, and throughout Whole body, drugs not only act on the body to produce therapeutic effects, to achieve our intended purpose, but also have side effects, toxicity and other adverse reactions. The dosage is