Elixir of life
From Freepedia
The elixir of life is legendary potion or drink that grants the drinker eternal life or eternal youth. It was pursued by many practitioners of alchemy for two main reasons: either they sought the gift of immortality for its own sake, or they desired to spend as much time as possible practicing alchemy.
Naturally, no such potion has ever been discovered.
Fictional references
The elixir of life is mentioned in the movie and book Harry Potter and the Philosopher's Stone
