What are Proanthocyanidins (PACs)?

Proanthocyanidins (PACs) are in the flavanol family – a class of polyphenols. The PACs found in cranberries have a different structure than those found in other fruits and vegetables which are associated with their anti-adhesion properties. Cranberry PACs help prevent the adhesion of certain harmful bacteria, including E. coli associated with urinary tract infections, onto cell walls.