Botanical sources both as monomers or oligomers /proyani dins/the richest sources of flavanols include green tea’ cocoa’ red grapes’ apples’ red wine’ and berries. Catechins’ namely .catechin’ gallocatechin’ epicatechin’ epicate-chin-3-gallate ‘ epigallocatechin’ and epigallocatechin-3-gallate’ which account for 30% of the dry weight of green tea leaves’ were found to have antioxidant’ anticancer’ antiangiogenic’ antimutagenic’ hypocholesterolemic’ antiaging’ antidiabetic’ antibacterial’ anti-hiv’ and anti-inflammatory effects.recent pharmacological studies have revealed that C and EC exhibit good neuroprotective effects in brain.