Maxaquin Dosage

Generic name: lomefloxacin hydrochloride
Dosage form: Tablets

This dosage information does not include all the information needed to use Maxaquin safely and effectively. See full prescribing information for Maxaquin.

The information at is not a substitute for medical advice. ALWAYS consult your doctor or pharmacist.

Maxaquin (lomefloxacin HCl) may be taken without regard to meals. Sucralfate and antacids containing magnesium or aluminum, or Videx® (didanosine), chewable/buffered tablets or the pediatric powder for oral solution should not be taken within 4 hours before or 2 hours after taking lomefloxacin. Risk of reaction to solar UVA light may be reduced by taking Maxaquin at least 12 hours before exposure to the sun (eg, in the evening). (See Clinical Pharmacology.)

See Indications and Usage for information on appropriate pathogens and patient populations.


Patients with normal renal function

The recommended daily dose of Maxaquin is described in the following chart:

Infection Unit
Frequency Duration Daily
Acute bacterial exacerbation of chronic bronchitis 400 mg qd 10 days 400 mg
Uncomplicated cystitis in females caused by E coli 400 mg qd 3 days 400 mg
Uncomplicated cystitis caused by K pneumoniae, P mirabilis, or S Saprophyticus 400 mg qd 10 days 400 mg
Complicated UTI 400 mg qd 14 days 400 mg

Elderly patients

No dosage adjustment is needed for elderly patients with normal renal function (ClCr≥ 40 mL/min/1.73 m2).

Patients with impaired renal function

Lomefloxacin is primarily eliminated by renal excretion. (See Clinical Pharmacology.) Modification of dosage is recommended in patients with renal dysfunction. In patients with a creatinine clearance > 10 mL/min/1.73 m2 but < 40 mL/min/1.73 m2, the recommended dosage is an initial loading dose of 400 mg followed by daily maintenance doses of 200 mg (1/2 tablet) once daily for the duration of treatment. It is suggested that serial determinations of lomefloxacin levels be performed to determine any necessary alteration in the appropriate next dosing interval.

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

Men:                              (weight in kg) × (140 – age)
                                      (72) × serum creatinine (mg/dL)

Women:                         (0.85) × (calculated value for men)

Dialysis patients

Hemodialysis removes only a negligible amount of lomefloxacin (3% in 4 hours). Hemodialysis patients should receive an initial loading dose of 400 mg followed by daily maintenance doses of 200 mg (1/2 tablet) once daily for the duration of treatment.

Patients with cirrhosis

Cirrhosis does not reduce the nonrenal clearance of lomefloxacin. The need for a dosage reduction in this population should be based on the degree of renal function of the patient and on the plasma concentrations. (See Clinical Pharmacology and Dosage and Administration—Patients with impaired renal function.)

Prevention / prophylaxis

The recommended dose of Maxaquin is described in the following chart:

Procedure Dose Oral Administration
When preoperative prophylaxis is considered appropriate.
Transrectal prostate biopsy 400 mg
single dose
1–6 hours prior to
Transurethral surgical procedures* 400 mg
single dose
2–6 hours prior to

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