The claims were never scientifically proved, and he was considered a charlatan by the United States Food and Drug Administration (FDA).
[2] In the early 1940s, Koch announced his discovery of glyoxylide, a miracle drug that would cure a long list of diseases, even when administered at one part per trillion dilution.
Over 3,000 health practitioners in the U.S. paid $25 per ampoule for Koch's treatment and charged patients as much as $300 for a single injection.
A product known as the Koch treatment continued to be sold in Mexico long after it disappeared in the United States.
Biographer Jay Robert Nash has written that Koch was an "infamous quack throughout his entire career.