Difloxacin

Difloxacin

Chemical structure of Difloxacin

Difloxacin is a fluoroquinolone antibiotic used primarily in veterinary medicine. It is effective against a broad range of Gram-positive and Gram-negative bacteria. Difloxacin works by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes critical for DNA replication and transcription.

Mechanism of Action

Difloxacin, like other fluoroquinolones, targets bacterial DNA gyrase and topoisomerase IV. These enzymes are essential for maintaining the supercoiling of bacterial DNA, which is necessary for DNA replication and transcription. By inhibiting these enzymes, difloxacin disrupts the DNA synthesis process, leading to bacterial cell death.

Pharmacokinetics

Difloxacin is well absorbed after oral administration. It is distributed widely in the body, reaching therapeutic concentrations in various tissues. The drug is metabolized in the liver and excreted primarily in the urine. The half-life of difloxacin allows for once-daily dosing in most cases.

Clinical Uses

Difloxacin is used in veterinary medicine to treat infections in dogs and cats. It is effective against a variety of infections, including those of the skin, urinary tract, and respiratory system.

Side Effects

Common side effects of difloxacin include gastrointestinal disturbances such as vomiting and diarrhea. In some cases, it may cause central nervous system effects like seizures or tremors. As with other fluoroquinolones, there is a risk of tendonitis and tendon rupture, although this is more commonly reported in humans.

Precautions

Difloxacin should be used with caution in animals with a history of seizures or renal impairment. It is not recommended for use in young animals due to the risk of cartilage damage.

Related Pages

• Fluoroquinolone
• Antibiotic
• DNA gyrase
• Topoisomerase IV