Great little metal box with a lift off lid. Approximately 1930's
Distributed by Gilman Brothers of Boston, Mass.
Originally held 12 sealed doses of Shawmut Laxatives. The tin claims it as an aid in the Relief of Heartburn, Gas due to excess acidity of the stomach. Also an aid in the Relief of Headache when caused by occasional Constipation.
The three ingredients of Seidlitz powders (tartaric acid, potassium sodium tartrate and sodium bicarbonate) were manufactured by chemical factories from the mid-19th century onwards.