Chrysophanol 8-O-glucoside and chrysophanol have mild cytotoxicity and anti-diabetic properties and can play metabolic roles in the insulin-stimulated glucose transport pathway.

Tetrahydroalstonine is an indole alkaloid extracted from the fruit of Rhazya stricta and is a selective α2-adrenoceptor antagonist. tetrahydroalstonine has shown antipsychotic activity in Rauwolfia tetraphylla.

Extracted from Grape seed,pine bark coast of France; Suitability:Water,most organic solvents;Store the product in sealed,cool and dry condition.