Take the advice of horsedoc and listen to your vet. Time and patience are what you need. Your horse needs daily care. In the past I have had some really bad cuts on horses and in every case when I listened to my vet they healed with care and time. 15 minutes of hard cold water therapy daily does wonders for proud flesh. Listen to your vet. If you don't and jump from one "miracle cure" to another why bother with the vet at all.