What is the Elixir of Life?

"Medieval alchemists and mystics believed they were justified in their search for the mythical elixir of life, a universal medicine supposedly containing a recipe for the renewal of youth."
https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/elixir-life

"The elixir of life, also known as elixir of immortality and sometimes equated with the name philosopher's stone, is a potion that supposedly grants the drinker eternal life and/or eternal youth. This elixir was also said to cure all diseases. Alchemists in various ages and cultures sought the means of formulating the elixir."
https://en.wikipedia.org/wiki/Elixir_of_life

"Elixirs of life have assumed many forms throughout history, but in most legends they take the form of food or drink that grants the consumer immortal life. Some of the most popular ingredients used in ancient recipes include mercury, sulphur, iron, copper, and honey. Of course, in modern times we’ve discovered — rather ironically — that many of the chemicals used by alchemists (particularly mercury) are actually highly poisonous."
https://m.huffpost.com/us/entry/us_59496f6de4b07e2395ce1007

"The search for the Elixir of Life has been the supreme quest for many. In medieval times, there are accounts of the alchemists looking for the philosopher’s stone, believed to be required to create the elixir but also to convert lead to gold"
https://www.ancient-origins.net/myths-legends/immortality-elixir-life-and-food-gods-001201

"Some sources believed the Elixir of Life was a magic potion that was drunk from the Holy Grail to provide immortality"
http://scienceofwholeness.com/elixir-of-life/

"The same term, more fully elixir vitae, “elixir of life,” was given to the substance that would indefinitely prolong life—a liquid that was believed to be allied with the philosopher’s stone."
https://www.britannica.com/topic/elixir-alchemy

"The concept of a universal Elixir of Life (aka Elixir Vitae in Latin, and Elixir of Immortality) has been a common theme in many world cultures. It’s the idea of a magical potion thought to cure all ailments and offer the drinker a long life."
https://motherhoodcommunity.com/elixir-life-look-hot-boost-immunity-flatten-belly-strengthen-heart-just-5-simple-ingredients/

"The traditions of the “Elixir of Life,” said to be in the possession of Kabalists and Alchemists, are still cherished by students of Medieval Occultism—in Europe."
https://universaltheosophy.com/articles/the-elixir-of-life/