Researchers at the University of Toronto found that the principal phytoestrogen in Protykin® was absorbed in biologically active quantities when consumed as part of a phytoestrogen-enriched grape juice. Sufficient amounts were absorbed to cause a reduction in blood parameters associated with heart disease, suggesting a reduction in subjects’ risk for heart disease. Study subjects consumed red wine, white wine, grape juice and grape juice with phytoestrogens daily for 4 weeks each.

Source: Pace-Asciak CR, Rounova O, Hahn SE, Diamandis EP, Goldberg DM, Wines and Grape Juices as Modulators of Platelet Aggregation in Healthy Human Subjects, Clinica Chimica Acta, 246:163-182, 1996.