Drug Information for Ofloxacin (Ranbaxy Pharmaceuticals Inc.): DOSAGE AND ADMINISTRATION

  • The usual dose of ofloxacin tablets is 200 mg to 400 mg orally every 12 h as described in the following dosing chart. These recommendations apply to patients with normal renal function (i.e., creatinine clearance > 50 mL/min). For patients with altered renal function (i.e., creatinine clearance = 50 mL/min), see the Patients with Impaired Renal Function subsection.

    Acute Bacterial Exacerbation of Chronic Bronchitis 400 mg q12h 10 days 800 mg
    Comm. Acquired Pneumonia 400 mg q12h 10 days 800 mg
    Uncomplicated Skin and Skin Structure Infections 400 mg q12h 10 days 800 mg
    Acute, Uncomplicated Urethral and Cervical Gonorrhea 400 mg single dose 1 day 400 mg
    Nongonococcal Cervicitis/Urethritis due to C. trachomatis 300 mg q12h 7 days 600 mg
    Mixed Infection of the urethra and cervix due to C. trachomatis and N. gonorrhoeae 300 mg q12h 7 days 600 mg
    Acute Pelvic Inflammatory Disease 400 mg q12h 10 to 14 days 800 mg
    Uncomplicated Cystitis due to E. Coli or K. pneumoniae 200 mg q12h 3 days 400 mg
    Uncomplicated Cystitis due to other approved pathogens 200 mg q12h 7 days 400 mg
    Complicated UTI’s 200 mg q12h 10 days 400 mg
    Prostatitis due to E. coli 300 mg q12h 6 weeks 600 mg


    Antacids containing calcium, magnesium, or aluminum; sucralfate; divalent or trivalent cations such as iron; or multivitamins containing zinc; or Videx ® (didanosine) should not be taken within the two-hour period before or within the two-hour period after taking ofloxacin. (See PRECAUTIONS.)

    Patients with Impaired Renal Function:

    Dosage should be adjusted for patients with a creatinine clearance = 50 mL/min. After a normal initial dose, dosage should be adjusted as follows:

    Creatinine ClearanceMaintenance DoseFrequency
    20 to 50 mL/min the usual recommended unit dose q24h
    < 20 mL/min 1/2 the usual recommended unit dose q24h

    When only the serum creatinine is known, the following formula may be used to estimate creatinine clearance.

    Men: Creatinine clearance (mL/min) = Weight (kg) x (140-age)

    72 x serum creatinine (mg/dL)

    Women: 0.85 x the value calculated for men.

    The serum creatinine should represent a steady-state of renal function.

    Patients with Cirrhosis:

    The excretion of ofloxacin may be reduced in patients with severe liver function disorders (e.g., cirrhosis with or without ascites). A maximum dose of 400 mg of ofloxacin per day should therefore not be exceeded.

  • Drug Information Provided by National Library of Medicine (NLM).