Blue mass (also known as blue pill or pilula hydrargyri) was the name of a mercury-based treatment for syphilis common from the 17th to the 19th centuries. The oldest known formula is ascribed to the Barbary corsair Hayreddin Barbarossa, in a letter to Francis I of France.
Blue mass (also known as blue pill or pilula hydrargyri) was the name of a mercury-based treatment for syphilis common from the 17th to the 19th centuries. The oldest known formula is ascribed to the Barbary corsair Hayreddin Barbarossa, in a letter to Francis I of France.
Source: Wikipedia "Blue mass" · CC BY-SA 4.0
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