Further, Webb an co-workers elegantly showed that the lowering effect of vegetable juice on BP was independent of K+ levels, since the rise in plasma K+ was unaffected by spitting, while nitrate effect on BP were abolished by these procedure [5]. Moreover, since dietary sodium nitrate supplementation in the present study has similar effects as shown by Larsen et al. [13], this convincingly suggests that it is nitrate and not antioxidant, polyphenols or potassium that is responsible for the BP effect.