Diosmetin
Diosmetin is a bioflavonoid found in spearmint, oregano, and many other plants. Like all bioflavonoids, diosmetin helps maintain normal capillary permeability and fragility. Diosmetin is called a bioflavonoid because of its chemical structure which is similar to the chemical structure of flavones, as well as for its biological activity.
References
Leung, Albert Y. 1980. Encyclopedia of Common Natural Ingredient used in Food, Drugs and Cosmetics. John Wiley and Sons, New York. 409 pp.
Orten, J. M. and Otto W. Neuhaus. 1982. Human Biochemistry. Mosby Co. St. Louis. 984 pp.
Windholz, Martha, Susan Budavani, et. al. 1976. The Merck Index. Merck and Co., Inc. New Jersey.