By appointment to her majesty Queen Elizabeth II. For better drinks - use Angostura. Does not contain Angostura bark. For the better guarantee of product authenticity of this aromatic bitters, the label on every bottle bears a facsimile of the signature of Dr. J. G. B. Siegert. There are other aromatic bitters but only one Angostura, the brand name under which Dr. J. G. B. Siegert and his successors have sold their product throughout the world since 1830. It does not contain Angostura Bark but derives its name from the fact that it originated in the town of Angostura, Venezuela, renamed Ciudad Bolivar in 1846. It is now produced by Angostura Limited from the original formula of Dr.