What is vitamin c with bioflavonoids rosehipvitamin c with bioflavonoids rosehip is a premium supplement containing 1000mg of vitamin c and its most synergistic counterpartswhy use vitamin c with bioflavonoids rosehipvitamin c is a key vitamin found naturally in many fruit and vegetables in particular citrus fruits vitamin c contributes towards energy metabolism immune function iron absorption psychological function and a reduction of tiredness and fatigue rosehip is a source of