Cranberry has been shown to contain high antioxidant activity,Lingonberry may benefit people suffered from certain infections.Lingonberry extract contains procyanidins B1, B2, and A2, other flavanol oligomers, as well as large concentrations of aglycones for ferulic acid, p-coumaric acid, and quercetin. French researchers administered of 23 milligrams per kilogram of body weight of lingonberry extract to laboratory rats.