Side Effects of Baytril for Cat Bladder Infection

Baytril (enrofloxacin) is an antibacterial medication with a variety of uses. It is often used to treat bladder infections in cats. According to the manufacturer's website, there are few instances of adverse side effects associated with the use of Baytril. However, if your cat does exhibit the following side effects, see your veterinarian.

  1. Retinal Toxicity

    • Baytril may cause retinal toxicity in cats that may result in permanent or reversible loss of vision. This side effect is most commonly associated with long-term use of both oral and injectable forms of Baytril. According to the head of the Tufts University ophthalmology department, this side effect most commonly occurs in cats who receive a dosage of between 10 and 20 mg/kg daily, although cats that receive 4.6 mg/kg daily have also been affected.

    Gastrointestinal Discomfort

    • Baytril may cause nausea, vomiting or diarrhea in cats. Contact your veterinarian if this occurs.

    Cartilage Lesions

    • Although cats are much less susceptible to cartilage lesions than dogs, this side effect may develop after long-term usage, especially in growing cats between 2 and 10 months of age. Cartilage lesions do not always exhibit symptoms. If the lesion does not heal by itself, it may cause joint pain as it deepens. Limping or favoring the affected leg is the primary sign.

    Small Litter Size

    • Pregnant cats that receive between 210 and 875 mg/kg of Baytril while they are gestating may experience small litter sizes. The offspring may also experience delayed ossification of their bones.