Vitexin

Vitexin is a flavonoid glycoside found in certain herbs including hawthorn herb.

Aloysia citriodora Palau
Aloysia citriodora Palau, Verbenaceae is widely used for gastrointestinal disorders and as eupeptic in South America. The flavonoid vitexin is partially responsible for the spasmolytic effect, since it non-competitively inhibits acetylcholine but not the Ca(2+) influx. Isovitexin is devoid of activity on the duodenum.

Hawthorn herb
Hawthorn (Crataegus pinnatifida Bge.) leaves have vitexin-2"-O-glucoside, vitexin-2"-O-rhamnoside, rutin, and hyperoside.

Rooibos (Aspalathus linearis)
Rooibos (Aspalathus linearis) have flavonoids that include dihydrochalcones aspalathin and nothofagin and their flavone analogues, orientin and isoorientin, and vitexin and isovitexin, respectively, as well as luteolin, chrysoeriol, catechin, quercetin, isoquercitrin, hyperoside and rutin.

Sophora tonkinensis
Sophora tonkinensis herb has bayin, vitexin, lupeol and tonkinensisol.

Trollius ledibouri Reichb. flower
Trollius ledibouri flower has 2''-O-beta-L-galactopyranosylorientin, 2''-O-beta-arabinopyranosylorientin, orientin and vitexin.

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