"...Tannins will indeed constrict blood vessels, but our 5,000-year history of drinking wine and tea, both of which are high in tannins, is testimony that ill effects are outweighed by benefits. "Proanthocyanidins" are among the substances labeled as "tannins." Proanthocyanidins are simply several molecules of the phytochemicals that we call flavonoids joined together..."
"...Tannins are touted as excellent antioxidants, promoted by the tea industry as well as wine and cheese makers. Catechin, one of several thousand proanthocyanidins or polyphenols, is a type of tannin peculiar to tea..."
"...Litozin provides more than just vitamin C. Since it is derived from food, it also has a number of substances that are known to be beneficial in various ways, such as organic acids (citric acid, malic acid, etc.) and proanthocyanidins (potent antioxidants), as well as several bioflavonoids...."
"...Another reason to use vitamin E is that poor immune response has been associated with low levels of vitamin E. Other sources of companion antioxidants include plant constituents, termed proanthocyanidins, which are available from fruit and green tea and are also used to treat viral infection...."
"...Red wine contains a class of flavonoids called "oligomeric proanthocyanidins" or, due to this awkward name, OPCs. These are credited with increasing the good HDL cholesterol and may also inhibit the production of a peptide called endothelin-1, which is a potent blood vessel constrictor..."
"...You should have no trouble finding a multiple antioxidant formula that would supply reasonable amounts of vitamin E, vitamin C, beta-carotene, coenzyme Q-10, and selenium. A formula containing these, plus any or all of the following less common antioxidants would be even better: n-acetyl cysteine, glutathione, citrus bioflavonoids, and proanthocyanidins...."