Using innovative Nutritional Hybrid Technology to combine two of USANA’s most popular Nutritionals, Proflavanol® and Poly C®, Proflavanol® C100 packs the best of both worlds into a single, powerful pill. Why Proflavanol C100? With USANA’s unique formulation, Proflavanol C100 bioflavonoid supplement combines the highest quality grape-seed extract with the free-radical quenching power of vitamin C, giving you an …