MHO:

If the horse cant make it the distance by itself, then it shouldnt be made to go on. Its not fair to the horse, and its not fair to the other horses that are making the grade without the help of drugs. I would place an "anti bleeder drug" in the catergory of performance enhancing, because in all truth, without it, its performance would be moot due to lung bleeds. Using a drug to stop that is in effect enhancing it performance just by its continued existence.

I also would not agree to a drug being used that could mask others, whether the horse had a history of lung bleeds or not. It creates a grey area, and considering the history of horse racing, one that many have worked hard to try and fix, the industry can not afford any grey area's.