Well whatever you do dont buy your supps from walmart! I buy mine from The Life Extention Foundation ! They have a greeeeeat product the has equal parts of ascorbate acid, calcium ascorbate, potassium ascorbate and zinc ascorbate ! It is effervescent and taste like a mild lemonade! Research your supps before you buy them, there is a lot of junk out there! I dont worry about bioflavanoids to much ,they are plentiful in fruits particularly citrus!