My black lab has developed a lick granuloma on his paw. Had cortisone shot to lesson temptation to lick the wound and has been taking antibiotic Cephalexin 500mg twice daily with little effect. Any advice, thoughts, remedies? Has been seen by vet that I have used for 40 years and have complete faith in but, just looking for more cures?? Thanks..

The Greatest Enemy of knowledge is not ignorance,
it is the illusion of knowledge.--Stephen Hawking