Charles Richet


Charles Robert Richet

Photo from the Nobel Foundation archive.

Charles Robert Richet
The Nobel Prize in Physiology or Medicine 1913

Born: 26 August 1850, Paris, France

Died: 4 December 1935, Paris, France

Affiliation at the time of the award: Sorbonne University, Paris, France

Prize motivation: “in recognition of his work on anaphylaxis”

Prize share: 1/1


Our immune system protects us from attacks by microorganisms and poisonous substances. After experiencing an attack, the immune system learns to defend itself against new attacks—we become immune. One of the ways this is used is with vaccinations, when a low dosage of an infectious substance provides immunity. Through studies involving dogs, Charles Richet demonstrated an opposite effect in 1902. After an initial low dose of a substance, a new dose some weeks later could produce a severe reaction. He called the phenomenon anaphylaxis. The result had important implications for our understanding of allergies.

To cite this section
MLA style: Charles Richet – Facts. Nobel Prize Outreach AB 2023. Mon. 2 Oct 2023. <>

Back to top Back To Top Takes users back to the top of the page

Watch the 2023 Nobel Prize announcements

Don't miss the Nobel Prize announcements 2-9 October!

Watch the live stream of the announcements.

Explore prizes and laureates

Look for popular awards and laureates in different fields, and discover the history of the Nobel Prize.