Pradofloxacin in Cats

Pradofloxacin is a prescription fluoroquinolone antibiotic used in cats to treat certain bacterial infections. In the United States, the oral suspension product Veraflox is FDA-approved for cats 12 weeks of age and older for skin infections, especially wounds and abscesses caused by susceptible bacteria. It is not useful for viral infections, and it should only be used when your vet believes a bacterial infection is likely or confirmed.

This medication is often chosen when a cat needs a once-daily liquid antibiotic and when the likely bacteria fit the drug’s spectrum. In practice, your vet may also prescribe pradofloxacin off-label for some urinary or respiratory infections, but those uses are different from the labeled FDA indication. That is one reason culture and sensitivity testing can matter, especially in recurrent, deep, or nonhealing infections.

Because pradofloxacin belongs to the fluoroquinolone family, vets also think carefully about antimicrobial stewardship before using it. These drugs are valuable, but they should be reserved for situations where they are likely to help. For pet parents, that means the best next step is not choosing the antibiotic yourself. It is working with your vet to match the medication, dose, and treatment length to your cat’s specific infection and health history.

Pradofloxacin kills bacteria by interfering with two enzymes they need to copy and repair DNA: DNA gyrase and topoisomerase IV. When those enzymes are blocked, susceptible bacteria cannot keep dividing and the infection can start to clear. This dual target is one reason pradofloxacin has broad antibacterial activity and can be effective against several organisms involved in feline skin infections.

In the FDA approval materials for cats, the labeled dose was selected using pharmacokinetic and pharmacodynamic data, meaning researchers looked at how the drug moves through the body and what drug exposure is needed to control target bacteria. The approved feline product is a 25 mg/mL oral suspension, and it is designed for once-daily dosing. In fasted cats, pradofloxacin is absorbed quickly, with peak blood levels reached in less than an hour according to product information.

Like other fluoroquinolones, pradofloxacin should be used thoughtfully. Merck notes that resistance to one fluoroquinolone can affect the whole class, so repeated or unnecessary use can reduce future treatment options. That is why your vet may recommend a culture, drainage of an abscess, wound care, or recheck exams along with the antibiotic rather than relying on medication alone.

The most common side effects reported with pradofloxacin in cats are digestive upset, especially vomiting, soft stool, diarrhea, drooling, or reduced appetite. Many cats tolerate the medication well, but stomach upset can happen, particularly if the dose is given on an empty stomach. If your cat vomits after a dose or seems nauseated, contact your vet before making changes.

More serious problems are less common but matter. VCA advises watching for lack of appetite, bruising, bleeding, lethargy, or signs of an allergic reaction. Product safety studies also found bone marrow suppression at higher-than-label doses in kittens, with changes such as neutropenia and thrombocytopenia. The labeled product was approved with an adequate safety margin at 7.5 mg/kg once daily for 7 days, but that does not mean overdoses are harmless.

Fluoroquinolones as a class can also raise concern about retinal toxicity in cats. Merck notes that pradofloxacin appears to be less retinotoxic than some other drugs in the class, especially enrofloxacin, but all fluoroquinolones should still be used carefully. Cats with kidney disease, very young kittens, or cats receiving higher-than-intended doses may deserve extra caution. See your vet immediately if your cat develops sudden weakness, trouble walking, severe vomiting, collapse, vision changes, or unusual behavior while taking this medication.

In the United States, the FDA-approved feline dose for Veraflox oral suspension is 7.5 mg/kg by mouth once daily for 7 consecutive days for labeled skin infections. The suspension concentration is 25 mg/mL, so the exact volume depends on your cat’s body weight. Because small volume differences matter in cats, your vet will usually prescribe the dose to the nearest 0.1 mL and recommend using the supplied oral syringe.

Shake the bottle well before each use. VCA advises giving pradofloxacin on an empty stomach when possible, but if your cat vomits or seems sick after dosing, your vet may tell you to give it with a small amount of food instead. Do not mix it with dairy products, antacids, or supplements containing iron, zinc, calcium, or aluminum unless your vet specifically says it is okay, because those products can interfere with absorption.

Do not stop early because your cat seems better after a day or two. Stopping too soon can allow the infection to flare back up and can contribute to antibiotic resistance. If you miss a dose, ask your vet or pharmacist what to do next rather than doubling up on your own. Pradofloxacin has not been adequately evaluated for breeding, pregnant, or nursing cats, and safety has not been established in kittens younger than 12 weeks or in immunocompromised cats such as some cats with FeLV or FIV.

The most important interactions with pradofloxacin involve products that bind the drug in the gut and reduce absorption. These include antacids and supplements containing calcium, iron, zinc, or aluminum, as well as sucralfate and dairy products given close to the dose. If your cat takes any of these, your vet may adjust timing or choose a different antibiotic.

VCA also recommends caution in cats with kidney or liver disease and in cats with a history of sensitivity to fluoroquinolones. Because fluoroquinolones can affect the nervous system in some patients, your vet may be more careful in cats with seizure disorders or neurologic disease. If your cat is on multiple medications, especially other drugs that can affect appetite, the stomach, or the nervous system, it is worth reviewing the full list before treatment starts.

A veterinary pharmacist reference also notes that pradofloxacin can increase theophylline blood levels by roughly 30% to 50%, which may matter in the uncommon cat taking theophylline for airway disease. The safest approach is to give your vet a complete medication and supplement list, including probiotics, over-the-counter products, and compounded medications. That helps your vet choose the most practical and evidence-based option for your cat.