Viagra can be readily tested for in the urine (as sildenafil) I\'d have to check and see who is testing for it (Jerry? call Rick and ask if CA does), but Viagra has been around for quite a few years as an illegal drug in the horse world (in humans, too)
The point would be to increase bloodflow to the muscles. Hence more oxygen, hence longer time to fatigue, hence hold their speed longer.
No, a horse will not probably come onto the track with the obvious clue.
Dose? No, having never used it (as it\'s illegal in horses and has no use), I don\'t know - but I could guess at what point I\'d want to start if I wanted to try it out. It\'s been experimented with for the obvious reason in equine reproduction (without success)
Usually this stuff doesn\'t have to involve vets - one can get anything they want off internet pharmacies, especially steroid preparations (buyer beware, you may or may not be getting what you hoped for at the dose you want).
I think there\'s a mistaken impression that dopers are extra-intelligent, having extraordinary scientific or chemical prowess. I think they are usually quite the opposite. They are not very bright people who are more, \"Hey, Bevis, lets\' try this\". \"Eh, eh, eh, okay Butthead\".
They think if a little is good, more is better (and kill their horse on the track with milkshaking). They think in big, broad, easy-reading fifth-grade terms about drugs are and what they can do.
Seriously - some guys will throw anything into a horse, and if it seems to not kill the horse and might be working (and no, they are not scientific about it ), they try it in their other horses. They they pass around the lore on the backstretch. There is probably more \"hope\" than actuality to the way alot of this stuff is used.
And if I wanted to be an overnight millionaire, all I\'d have to do is make up Doctors Special Racehorse Pills and get a testamonial or two about how great they are. There\'s one born every second.
Sure, some guys are brighter, and some of the more intelligent vets may figure some stuff out, but that\'s not the average IMO. Because the intelligent people easily figure out how to do stuff ... intelligently (good nutrition, good training, good husbandry, get into the horses mind and correct any mental issues, etc)
While the guys - vet, trainer, etc. - who are not rocket scientists, and can\'t be bothered learning how to be good, try to take shortcuts.