Flex-Tonic is an exclusive synergy of patented type II collagen and silica. The associated Vitamin C contributes to collagen formation which ensures normal cartilage function.
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The native collagen has not been modified. This means that the collagen molecular structure is intact: it is in the form of a triple helix, integrating epitopes which are the active elements of collagen.
Hence the importance of choosing a product that contains un-denatured collagen.
The one used in Flex-Tonic® tablets is patented and its integrity guaranteed.