Pefloxacin

Overview of the antibiotic Pefloxacin

Pefloxacin
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Pefloxacin is a fluoroquinolone antibiotic used to treat a variety of bacterial infections. It is a synthetic chemotherapeutic agent that is effective against a broad spectrum of Gram-positive and Gram-negative bacteria. Pefloxacin is commonly used in the treatment of urinary tract infections, respiratory tract infections, and gastrointestinal infections.

Mechanism of Action

Pefloxacin works by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes that are essential for DNA replication and transcription. This inhibition leads to the disruption of bacterial DNA synthesis, ultimately resulting in bacterial cell death.

Pharmacokinetics

Pefloxacin is well absorbed from the gastrointestinal tract and reaches peak plasma concentrations within 1 to 2 hours after oral administration. It is widely distributed throughout the body, including penetration into cerebrospinal fluid, making it effective for treating central nervous system infections. The drug is metabolized in the liver and excreted primarily in the urine.

Clinical Uses

Pefloxacin is indicated for the treatment of various infections, including:

• Urinary tract infections
• Respiratory tract infections
• Gastrointestinal infections
• Skin and soft tissue infections
• Bone and joint infections

Side Effects

Common side effects of pefloxacin include nausea, vomiting, diarrhea, and abdominal pain. Serious side effects may include tendonitis and tendon rupture, particularly in older adults and those on concurrent corticosteroid therapy. Photosensitivity reactions and central nervous system effects such as dizziness and headache have also been reported.

Contraindications

Pefloxacin is contraindicated in patients with a known hypersensitivity to quinolones and in those with a history of tendon disorders related to quinolone use. It should be used with caution in patients with renal impairment and hepatic impairment.

Related pages

• Fluoroquinolone
• Antibiotic
• Bacterial infection
• DNA gyrase

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  Pefloxacin