You might want to look at some of our products to help heal the body. DERMA-IONX which is an oral homeopathic product stimulates the enzyme systems in the body which reduces itching and inflammation, promotes healing of the skin and helps with assimilation of nutritional components in diet and supplements. The supplements I use along with it include probiotics, MSM, vitamin C, and Omega 3,6,9. Together with DERMA-IONX it produces a synergistic effect for a faster response. I would also suggest that you give your dog only filtered water for drinking and bathing if your water contains chlorine or fluoride.
What do you feed and give as treats? I would choose either fish, turkey, or beef as the protein source since they are cooling or neutral foods according to Chinese food therapy. However don't use one if there is a known allergy to it. Try to avoid grains such as corn, wheat, and soy.
To address the ears directly I would use an enzyme product called Zymox otic HC 1%. It is left in for a week before cleaning, the enzymes work against the organisms.
Using these products can help to resolve a difficult condition.
Please feel free to contact us again if you have any other questions.