i thought this stuff was harmless like milk of mag .
Bromo-Selzer is commonly sold in drug stores, both by the bottle and at soda fountains. The full dose is "a heaping teaspoonful." A heaping teaspoonful of Bromo-Selzer means about ten grains of acetanilid. The United States Pharmacopoeia dose is four grains: five grains have been known to produce fatal results. The prescribed dose of Bromo-Selzer is dangerous and has been know to produce sudden collapse.
http://www.museumofquackery.com/ephemera/dec02-02.htm
Bromo-Selzer is commonly sold in drug stores, both by the bottle and at soda fountains. The full dose is "a heaping teaspoonful." A heaping teaspoonful of Bromo-Selzer means about ten grains of acetanilid. The United States Pharmacopoeia dose is four grains: five grains have been known to produce fatal results. The prescribed dose of Bromo-Selzer is dangerous and has been know to produce sudden collapse.
http://www.museumofquackery.com/ephemera/dec02-02.htm