Cats will not die if they eat azithromycin. Azithromycin is an antibiotic drug that can be used to treat infectious diseases in cats. However, you must pay strict attention to the dosage. Appropriate medication can make cats regain their health. Overuse can cause kidney damage to cats. damage. Generally speaking, when cats are sick, it is recommended to prescribe the right medicine, and it is not recommended to use antibiotics such as azithromycin.