Drug Information for SULFAMETHOXAZOLE AND TRIMETHOPRIM ORAL SUSPENSION, USP (CHERRY FLAVOR) and SULFAMETHOXAZOLE AND TRIMETHOPRIM ORAL SUSPENSION, USP (GRAPE FLAVOR) 200 mg/40 mg per 5 mL (Qualitest Pharmaceuticals): DOSAGE AND ADMINISTRATION

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  • Contraindicated in pediatric patients less than 2 months of age.

  • Adults:

  • The usual adult dosage in the treatment of urinary tract infections is four teaspoonfuls (20 mL) sulfamethoxazole and trimethoprim oral suspension every 12 hours for 10 to 14 days. An identical daily dosage is used for 5 days in the treatment of shigellosis.

  • Pediatric Patients:

  • The recommended dose for pediatric patients with urinary tract infections or acute otitis media is 8 mg/kg trimethoprim and 40 mg/kg sulfamethoxazole per 24 hours, given in two divided doses every 12 hours for 10 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. The following table is a guideline for the attainment of this dosage:

    Pediatric Patients: Two Months of Age or Older

    WeightDose - Every 12 Hours
    lbkgTeaspoonfuls
    22101 (5 mL)
    44202 (10 mL)
    66303 (15 mL)
    88404 (20 mL)

    For Patients with Impaired Renal Function:

    When renal function is impaired, a reduced dosage should be employed using the following table:

    Creatinine Clearance (mL/min)Recommended Dosage Regimen
    Above 30Use Standard Regimen
    15–30½ the Usual Regimen
    Below 15Use Not Recommended
  • Acute Exacerbations of Chronic Bronchitis in Adults:

  • The usual adult dosage in the treatment of acute exacerbations of chronic bronchitis is four teaspoonfuls (20 mL) sulfamethoxazole and trimethoprim oral suspension every 12 hours for 14 days.

  • Travelers' Diarrhea in Adults:

  • For the treatment of travelers' diarrhea, the usual adult dosage is four teaspoonfuls (20 mL) of sulfamethoxazole and trimethoprim oral suspension every 12 hours for 5 days.

  • Adults and Pediatric Patients:

  • The recommended dosage for treatment of patients with documented Pneumocystis carinii pneumonia is 15 to 20 mg/kg trimethoprim and 75 to 100 mg/kg sulfamethoxazole per 24 hours given in equally divided doses every 6 hours for 14 to 21 days. The following table is a guideline for the upper limit of this dosage:

    WeightDose - Every 6 Hours
    lbkgTeaspoonfuls
    1881 (5 mL)
    35162 (10 mL)
    53243 (15 mL)
    70324 (20 mL)
    88405 (25 mL)
    106486 (30 mL)
    141648 (40 mL)
    1768010 (50 mL)

    For the lower limit dose (15 mg/kg trimethoprim and 75 mg/kg sulfamethoxazole per 24 hours) administer 75% of the dose in the above table.

  • Pediatric Patients:

  • For pediatric patients, the recommended dose is 150 mg/m2/day trimethoprim with 750 mg/m2/day sulfamethoxazole given orally in equally divided doses twice a day, on 3 consecutive days per week. The total daily dose should not exceed 320 mg trimethoprim and 1,600 mg sulfamethoxazole. The following table is a guideline for the attainment of this dosage in pediatric patients:

    Body Surface Area (m2)Dose - Every 12 Hours Teaspoonsfuls
    0.26½ (2.5 mL)
    0.531 (5 mL)
    1.062 (10 mL)
  • Drug Information Provided by National Library of Medicine (NLM).
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