Health & WellbeingHello! My vet prescribed Efex (marbofloxacin) for one of our cats experiencing issues with balance, after diagnosing the problem as otitis interna. However, the duration of treatment is 42 days, and I read that fluoroquinolones should not be given to
Hello. I would be very cautious about using the Efex for such a long period of time. Our veterinary formulary says the maximum use in cats should not exceed 30 days, but even at this time frame, you can still wind up with side effects from the long term use of any flouroquinolone, or run into a problem with antibiotic resistance. If the otitis interna was definitively diagnosed by radiography & myringotomy & this antibiotic was chosen based on a culture & sensitivity, then I would administer the antibiotic with frequent rechecks. Otherwise, an MRI may be necessary to confirm the condition. This may be the antibiotic to use, but 42 days is a bit worrisome. Thanks for using Boop by Petco.
Updated on August 12th, 2025
Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
Become a credit card member today!
