Before revision: Bottles of Elixir Sulfanilamide Elixir sulfanilamide was an improperly prepared sulfanilamide medicine that caused mass poisoning in the United States in 1937.
After revision: Bottles of Elixir Sulfanilamide Elixir sulfanilamide was an improperly prepared sulfonamide antibiotic that caused mass poisoning in the United States in 1937.