国内医药市场上 ,适合儿科用药的一些片剂很难买到 ,例如儿科常用的异丙嗪、安茶碱、苯海拉明等。儿科用药中的多数药物 ,药房只能发给成人用的片剂 ,一些婴儿的用药剂量小到 1/ 8片。药师在服药袋上标明每次服用几分之一片 ,让患者家属碾碎后按剂量服用 ,剂量准确性很难掌握 , In the domestic pharmaceutical market, some tablets suitable for pediatric use are hard to come by, such as promethazine, anophylline, diphenhydramine and the like commonly used in pediatrics. Most medicines used in pediatrics can only be given to adults for use in pharmacies. Some infants use as little as one in eight doses. Pharmacists in the medication bag marked on each taking a fraction, so that the families of patients crushed dose, dose accuracy is difficult to grasp,