The "elixir of life" is a mythical substance or potion that can grant eternal youth, longevity, or immortality. This concept has been prevalent in various cultures and religions, with different names and formulations. Some synonyms for the elixir of life include the philosopher's stone, ambrosia, nectar, soma, panacea, and the fountain of youth. The philosopher's stone is an alchemical substance believed to have the power to transmute base metals into gold and grant immortality. Ambrosia and nectar are the food and drink of the Greek gods, which also confer immortality. Soma is a plant-based drink mentioned in Hinduism that induces immortality and divine consciousness. Panacea is a cure-all medicine that renews youth and vitality, while the fountain of youth is a legendary spring believed to restore youth and vigor.