A know some vitamins were demoted because we discovered that they were made inside the body.
Exploring the Evolution of Vitamins: From Discovery to Impact | NanoEntek Blog

"A vitamin is a substance that makes you ill if you don't eat it"The words left by Albert Szent-Györgyi (16 September 1893 - 22 October 1986), who won the Nobel Prize in 1937 for illuminating the catalytic process of Vitamin C and pumaric acid, continue to resonate. For modern individuals, the consumption of vitamins serves various purposes, whether it's for boosting the immune system or for antioxidant effects. However, until relatively recently, the concept of vitamins was unknown, and they we

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Real captain are in the comments.
Thanks for the link!