I could imagine that taking a vasodilator would counteract these effects.
While I think little of any NO or pump product, arginine could theoretically help due to its influence on endothelial function. Similarly, antioxidants such as Vitamin C and E could help, as well (also due to manipulations of the endothelium). In the same vein (pun intended), fruits, vegetables, and anything with a high concentration of antioxidants could help this, most notable dark chocolate (or chocamine I suppose), garlic, and ginger.
Of course, if you are having real troubles, talking to your doctor about a PDE5 inhibitor will do the trick.