Paul Ehrlich

1854–1915 · Germany · Founder of chemotherapy / “magic bullet” concept.

Contribution

In 1909, developed Salvarsan (arsphenamine), the first effective medicinal treatment for syphilis (spirochetes). Introduced selective toxicity — drugs that hit the pathogen harder than the host.

Why It Still Matters

Every antimicrobial and many targeted therapies inherit the “magic bullet” idea. Bridges microscopy/staining chemistry to drug discovery.

Active Recall

  1. What disease did Salvarsan treat?
  2. What is meant by “magic bullet”?