GlycoFlex 3 have a smaller size to accommodate smaller, elderly and arthritic dogs that need advanced joint support. They have added vitamins C and E, grape seed extract, L-glutathione, along with glucosamine, MSM, DMG, and Green-Lipped Mussel (perna canaliculus). They help to treat your dog's existing joint problems while also preventing further damage. They also ease pain and inflammation associated with arthritis. 60 Chews Treats existing joint problems Designed to prevent further joint damage Eases the pain and inflammation associated with arthritis Formerly known as Glyco-Flex 3 Minis, 60 Soft Chews Comparison between old and new formulas.