[KimInMD]

Some dogs are prone to food allergies, yeast based ear infections, or even teething problems. This causes an inflammatory reaction, which in turn upsets a dog's PH balance. The result is a breeding ground for red yeast. Basically, the bad bacteria in the gut kills off the good bacteria. This happens in humans too. The standard vet cure is a low dose 10 day cycle of tetracycline, which again balances the GI tract. The active ingredient in Angel Eyes is Tylosin (similar in structure to Erythromycin). It is a Macrolide Antibiotic, meaning it does not kill bacteria but controls it's growth. It is prescribed to treat gastrointestinal tract infections. Even though the amount of Tylosin in Angel Eyes is small, I would never use it long term. It is meant to use short term to restore the balance between the good and bad bacterias. When that happens, the red yeast dies, and no more tear stains. Dogs with yeast smell terrible and they often itch like crazy. I can understand someone may not want to use an over the counter product like Angel Eyes. Please at least try a grain free diet and the distilled water to rule out the food allergy first. I hope this helps.