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

本药品每片有异丙嗪25毫克，其它成分是：乳糖，焦亚硫酸钠。

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

述了用焦亚硫酸钠为原料,经锌粉还原与成反应,生产次硫酸氢钠的新工艺。