The Oxford Thesaurus An A-Z Dictionary of Synonyms - elixirn.

1) panacea, cure-all, nostrum, wonder drug, miracle drug, sovereign remedy: In the Middle Ages alchemists sought a universal cure, an elixir. 2) essence, potion, extract, tincture, compound, mixture: Ophidia's Elixir was the name of a patent snake-oil medicine. 3) pith, core, kernel, heart, essence, quintessence, principle, extract, base, basis, soul: The elixir of life is wisdom and its mystic ingredient is not knowledge but understanding.