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I found some information on herbals that do much the same thing. For future information type thing. I don't think I'd try to compete with Bay though, especially if he's done endurance in his past life. He might be like an old fire horse and decide he's out to win and push himself too hard. Just go along to keep your husband company or crew for him. Being the pit crew is just about as much fun and you get to watch all the action. That's just my opinion though, since I don't know Bay and how sound he is.

I did find with my mare, when I rode the one competion ride that she was very experienced at that time thing and we spent 10miles arguing about the speed we were going to go.

Lots of information follows - sorry for the length

Vasodilator From Wikipedia, the free encyclopedia. A vasodilator is a substance that causes blood vessels in the body to become wider by relaxing the smooth muscle in the vessel wall. This will reduce blood pressure (since there is more room for the blood) and might allow blood to flow around a clot . Several vasodilators are used as drugs . Natural vasodilators and drugs that exploit them: Adenosine Adenocard - this is primarily used as an anti-arrhythmic . Adrenaline and noradrenaline vasodilate arterioles of the skeletal muscles . (By acting on beta-2 adrenergic receptors .) These chemicals cause vasoconstriction elsewhere. Alpha-blockers and Beta-blockers (block the constricting effect of adrenaline). Atrial natriuretic peptide (ANP) - a weak vasodilator. Bradykinin Histamine Complement proteins C3a, C4a and C5a work by triggering histamine release from mast cells and basophil granulocytes . Niacin (aka nicotinic acid ) Nitric oxide Glycerol trinitrate Platelet activating factor (PAF) Prostacyclin (PGI2) as well as other prostaglandins . Tetrahydrocannabinol (THC) - the major active chemical in marijuana . Its mild vasodilating effects redden the eyes of cannabis smokers.

http://dan.xtend-life.com/products.asp?product=tb&page=ingredient_info&ingredientid=7&pc=tw

Bilberry Extract Has been shown to be beneficial in vascular and blood disorders and shows positive effects when treating varicose veins, thrombosis, and angina. Bilberry contains flavonoids and anthocyanidin, which serve to prevent capillary fragility, thin the blood, and stimulate the release of vasodilators. Anthocyanidin, a natural antioxidant, also lowers blood pressure, reduces clotting and improves blood supply to the nervous system. Bilberry also contains glucoquinine that has the ability to lower blood sugar. Bilberry flavonoids provide numerous benefits in diabetics. They have been shown to increase intracellular vitamin C levels, decrease the leakiness and breakage of small blood vessels, prevent bruising and have potent antioxidant effects, e.g. help prevent free radical damage to the eyes. Anthocyanosides support and protect collagen structures in the blood vessels of the eyes, assuring strong, healthy capillaries that carry vital nutrients to eye muscles and nerves. Bilberry has long been a remedy for poor vision and "night blindness." Clinical tests confirm that given orally it improves visual accuracy in healthy people, and can help those with eye diseases such as cataracts, retinitis pigmentosa, glaucoma, and myopia. May be beneficial in Diabetes, Diabetic retinopathy, Macular degeneration, Cataract, Glaucoma, Varicose veins, Retinopathy, Atherosclerosis, Diarrhea, and Night blindness. Clinical Studies

http://groups.msn.com/naturalhealingliving/herbalremedies.msnw?action=get_message&mview=0&ID_Message=27&LastModified=4675393235733812803

http://www.all-natural.com/herbnutr.html

Bilberry Bilberry (Vaccinium myrtillus) contains nutrients that protect eyes from eyestrain or fatigue, and can improve circulation to the eyes. When British Royal Air Force pilots During World War II ate Bilberry preserves before night missions and discovered that their night vision improved afterwards, this herb was investigated and found to be beneficial for the eyes. Bilberry works by improving the microcirculation and regeneration of retinal purple, a substance required for good eyesight. It is believed that this property is related to the high amount of proanthocyanidins, a type of flavonoid that tends to prevent capillary fragility and strengthen the capillaries which nourish the eyes. Other properties appear to assist in thinning the blood and stimulating the release of vasodilators. Anthocyanin, a natural antioxidant, also lowers blood pressure, reduces clotting and improves blood supply to the nervous system. Anthocyanosides support and enhance the health of collagen structures in the blood vessels of the eyes, thus aiding in the development of strong healthy capillaries that can carry vital nutrients to eye muscles and nerves. Bilberry has long been a remedy for poor vision and "night blindness." Clinical tests have indicated that oral administration of bilberry tends to improve visual accuracy in healthy people and can help those with eye disorders such as pigmentosa, retinitis, glaucoma, and myopia.