Yes, I too often find that 12 hourly Metacam does works better due to how fast Rabbits metabolise the drug.
We really dont know if the same principle will apply with benazepril, but at the moment about 2 hours after the full dose there is a definite improvement in both how Morse is within himself and how his heart sounds. But by the time the next dose is due, 24 hours later, things are not so good for him. If we can get a more even 24 hour benefit it may mean his heart is under less strain.
I just wish Morse could be cured but I realise that is impossible