I got a platinum version of Pentosan from my vet. Be advised that the recommended administer method is IV (unless otherwise noted) which is why I quit feeding it. Always good to call and check.
as far as I know the platinum is only available through horseprerace. See if you can get your vet to call in your perscription to Wedgewood and you can call and refill and pay them directly-Vet's aren't supposed to mark up the compounded pharmaceuticals but they obviously do-I pay $166 for the 100ml delivered to my house from Wedgewood. My vet is pretty dang amazing though....