Several of my dogs have had pancreatitis. Two of them never fully recovered from the initial acute attack and now have chronic pancreatitis. Paxil's levels fluctuate. She stops eating and acts lethargic when they are high. She gets sub-q fluids for two days at home. If she's still not eating by day three, she goes back to the vet for IV treatment. She hasn't had to go back for quite awhile now. Earle's levels are steady at close to triple what they should be. He eats a low fat diet for the rest of his life and shows no other ill effects. Preacher had recurrent attacks, but his levels always returned to normal after a week or so.

I hope your boy is feeling better soon and hasn't had any permanent damage to his pancreas.