甜菊醇（Steviol）是一种双萜，1931年首次从甜菊中分离出来。而直到1960年，人们才完全了解其化学结构。甜菊醇的甜度是糖的三百倍，但对血糖的影响最小。

Steviol is a diterpene first isolated from the plant Stevia rebaudiana in 1931. Its chemical structure was not fully elucidated until 1960.

Steviol occurs in the plant as steviol glycosides, sweet compounds that have found widespread use as sugar substitutes.