A substance called rebiana which is a trade name for zero-calorie
sweetener containing mainly steviol glycoside is extracted from stevia.
Stevia is also rich in flavonoids and terpenes. Other constituents are
stevioside which is considered sweetest in stevia, steviolbioside,
rebausiosides A-E, dulcoside ; chemicals like caffeic acid, campesterol,
chlorogenic acid, chlorophyll, diterpene glycosides, dulcosides A-B,
formic acid.
Stevia is a natural sweetener and extensively used
Stevia is recorded to have some beneficial properties such as anti bacterial, anti fungal, anti viral, a good tonic and wound healer.
It also helps in treating heart burning and other medical ailments.