Years ago, I had a female border collie who started working on a lick granuloma. The vet prescribed Prozac and withinn just a few days she stopped licking that spot. I kept her on the med for the rest of the summer and took her off in the fall. I was suprised at how quickly it worked for her. When I was took Prozac, it was several weeks before I noticed any difference in my attitude.
Although the Prozac stopped the licking, nothing else about her changed. She was still the "suck the life out of the party, fun police"