Popularly known as Seidlitz powder. A mixture of sodium bicarbonate (31 gm.), potassium and sodium tartrate (93 gm.) and tartaric acid (27 gm.).

The sodium bicarbonate is mixed with the potassium and sodium tartrate and the mixture divided into twelve equal parts and each part is wrapped separately in a blue paper. Each blue paper contains 73/4 gm. of potassium and sodium tartrate. The tartaric acid is also divided into twelve parts and each part wrapped in a separate white paper.

Dosage: One set of two papers.