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Fosfomycin Dosage

Medically reviewed by Drugs.com. Last updated on Jul 2, 2018.

Applies to the following strengths: 3 g

Usual Adult Dose for Cystitis

3 g (1 sachet) orally once as a single dose

Comments:
-This drug should not be used for the treatment of pyelonephritis or perinephric abscess.

Use: For the treatment of uncomplicated urinary tract infections (acute cystitis) in women due to susceptible strains of Escherichia coli and Enterococcus faecalis

Usual Adult Dose for Urinary Tract Infection

3 g (1 sachet) orally once as a single dose

Comments:
-This drug should not be used for the treatment of pyelonephritis or perinephric abscess.

Use: For the treatment of uncomplicated urinary tract infections (acute cystitis) in women due to susceptible strains of Escherichia coli and Enterococcus faecalis

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Precautions

CONTRAINDICATIONS:
Known hypersensitivity to the active component or any of the ingredients

Safety and efficacy have not been established in patients younger than 12 years; this drug is only approved for use in women 18 years or older.

Consult WARNINGS section for additional precautions.

Dialysis

Data not available

Other Comments

Administration advice:
-May administer with or without food
-Do not administer this drug in its dry form; always mix with water prior to ingestion; administer immediately after dissolving in water.
-Do not use more than 1 single dose to treat a single episode of acute cystitis.

Reconstitution/preparation techniques:
-The contents of 1 sachet should be dissolved in 3 to 4 ounces of water (1/2 cup) immediately prior to administration; hot water should not be used.

General:
-Urine specimens for culture and susceptibility testing should be obtained before and after oral therapy.
-If bacteriuria persists or reappears after use of this drug, alternative therapeutic regimens should be selected based on microbiological studies.

Patient advice:
-If symptoms do not improve in 2 to 3 days after taking the single oral dose, contact healthcare provider.
-Consult healthcare provider at once if watery and bloody stools (with or without stomach cramps and fever) develop.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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