Iletin, 1920s

Eli Lilly and Company was the first company to sell insulin for the treatment of diabetes in the United States. Iletin, the name of Lilly’s insulin product, became available in 1923. Prior to this time, almost all cases of Type 1 diabetes, mostly occurring in children or youth adults, proved fatal.
| Date: 1920s | Source: National Museum of American History Image source
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