My cat was recently diagnosed with hyperthyroidism. After a short time period of medication via a pill, she became very ill and needed to be taken on New Year's Day to an Animal 911 hospital. The medication, as it turns out, was severely upsetting her GI system. The hospital bill for the overnight stay with doctor care and tests was about $800. Now on a transdermal gel application, she is doing fine. I was grateful to have the insurance, which helped very much. Payment for what was covered arrived about three weeks later.