Im not sure hes in the states Vet.
That aint gona fly in the land of the free and home of the brave... we go laws here, lots of laws...
It doesn't matter unless he's in some third world country and spoke with some quack.
The US follows the same basic international doping laws for racing horses (thoroughbreds, standardbreds, arabs and quarter horses). This testing has been ongoing since the early part of the last century and hands down is the most stringent drug testing protocols in existence. My wife and I (my wife more than myself admittantly) have in the past worked on both sides of the coin---with collecting samples for drug testing and we've worked prescribing "performance enhancers" and augmenting on the track horses (again my wife more so than myself as she is a board certified equine surgeon).
First off, most of the "performance enhancing" drugs administered to racing horses aren't administered by veterinarians. They are administered by the trainers. The veterinarians who are involved with those drugs know EVERYTHING specific about those drugs from half lifes, to doses for desired effects, to side effects----the reason why? Money. If a vet fucks up and administers a drug that a horse tests positive for, they can kiss their job at the racetrack goodby. Its that simple, even if its a grade horse. If she was administering those drugs, she'd know doses hands down. Not only that, not one of those drugs is dosed in IU's. They are all dosed on a mg/kg basis---INTERNATIONALLY. As a matter of fact the only drug dosed with IU's commonly used in horses is Procaine Penicillin.
EQ is hardly used in the racing industry because of the long residues. Racing horses are tested too frequently considering how long metabolites of drugs like EQ and deca are present. Think about it. Most racing horses are tested immediately before or after the event (because of drugs like EPO which aren't detectable 72 hours post administration). EQ potentially has metabolites present for up to months from one dose. The risk of getting caught is too great. Is EQ used for horses? Absolutely, its a labled Equine drug, however it's generally used for doping in the "show" and nondrug tested performance arena (like cutting/barrel racing, dressage, etc), not racingor eventing.
Finally, none of the racing track vets I know (and between my wife and I, we know quite a few) would openly talk with a complete stranger about the use of performance enhancing drugs that they are currently administering to their patients, especially in a bar or some public venue where there was the risk of someone who knows them overhearing and reporting the activity to that states racing comission. All it takes is an investigation for a racetrack vet to lose high dollar clients. Again, its money. They aren't going to risk their clients by bragging about shit like that anywhere. If they do, they are an idiot. This is the horse industry. Horse racing money is big money that goes very, very deep. You don't mess with that money if you value your job. A vet talking about the drugs they are administering the horses is like some human physician bragging at a bar about the drugs they've prescribed professional athletes. It just doesnt happen and that doctor keep clients.
Because of what I posted above, I'm calling bullshit on the story. Its a nice story, but its not real, no way in hell. Someone didn't tell the truth to someone with it.