Emetic powder sold in white boxes

I am a servant of the public, and my name is Emetic. I produce a feeling of nausea, and I promote the cause of emetics. I am a white powder, which is sold in square white boxes. I am administered to people who are sick, and to people who are not sick, but only think they shall be. I act as an emetic, and I act as a gentle, and bloodless, and safe, emetic. I Ipecacuan, and I Tartarised, and I Ipecacuanised, and I Tartarised, Emetic. I Ipecacuanised, and I Tartarised, Emetic, is a compound of Ipecacuan and Tartar Emetic, and I Ipecacuanised, and I Tartarised, Emetic, is a