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Which treatments were used for syphilis before penicillin?
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syphilis
Scanning electron micrograph of Treponema pallidum, the spirochete bacterium that is the causative agent of syphilis.
Before the introduction of penicillin in the 1940s, several treatments were used to manage syphilis, though they varied significantly in efficacy and toxicity.
- Mercury: Following the post-Columbian outbreak, the application of mercury to treat syphilitic lesions became widespread.1
- Potassium Iodide: Introduced in 1836, this treatment was considered less toxic and more effective than mercury.1
- Arsphenamine: Developed in 1909–1910 by the German scientist Paul Ehrlich, this arsenic compound—marketed as Salvarsan or 606—was the first drug designed to attack the syphilis-causing spirochete directly. It represented a landmark in chemotherapy as the first synthetic compound used to combat a specific infectious organism.12
These historical treatments highlight the evolution of medicine from early chemical applications to the targeted synthetic therapies that preceded the antibiotic era.12