Does grape juice have significant antiviral activity? If so, how would it rank in effectiveness compared to pomegranate juice? Would it add important additional coverage if added as well to our Antiviral Regimen?

Grape juice has antiviral constituents but is on the weaker side so the volume ingested would need to be higher than desired to get a meaningful benefit. Some of the supplement constituents of great value are currently being extracted from grapes, because this allows concentrating them in powder form and achieving a therapeutic benefit more readily.