My 8 year old Chihuahua has suffered from repeated ear problems. She has begun to act differently, she was a very active dog until recently ,she acts as though she wants to hide herself,even to the point of not wanting to go outside or be a part of activities that she enjoyed. I can not afford all of the testing my vet has asked for and rather then see her suffer I am at the point of making the aweful decision to put her to sleep. My vet has given her Gentizol for the problem and I have used it as perscribed, I also keep her ears clean of debree and make sure she gets a good diet and exercise. I am very concerned because her personality has changed dramatically. Can the use of Gentizol cause other health problems?