Each tablet contains 25mg Promethazine teoclate. Other ingredients include: lactose, sodium metabisulphite (E223).

本药品每片含有茶异丙嗪25毫克，其它成分是：乳糖，硫酸。

This paper describes a new technology for production of rongalite based on sodium pyrosulfite reduced by zinc powder and reacted with formaldehyde.

斜述了硫酸为原料,经锌粉还原醛加成反应,生产次硫酸醛的新工艺。