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Fosfomycin (Systemic)

Contents of this page:

Brand Names

Some commonly used brand names are:

In the U.S.--


Category


Description

Fosfomycin (fos-foe-MYE-sin) is an antibiotic. It is used to treat urinary tract infection and cystitis (bladder infection) in women.

This medicine is available only with your doctor's prescription, in the following dosage form:


Before Using This Medicine

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For fosfomycin, the following should be considered:

Allergies--Tell your doctor if you have ever had any unusual or allergic reaction to fosfomycin. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.

Pregnancy--Fosfomycin has not been studied in pregnant women. However, it does pass through the placenta from the mother to the baby. In animals, fosfomycin has been shown to cause some harmful effects in the mother and the infant.

Breast-feeding--It is not known whether fosfomycin passes into breast milk. Although most medicines pass into breast milk in small amounts, many of them may be used safely while breast-feeding. Mothers who receive this medicine and who wish to breast-feed should discuss this with their doctor.

Other medicines--Although certain medicines should not be used together at all, in other cases two different medicines may be used together even in an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your doctor and pharmacist if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Other medical problems--The presence of other medical problems may affect the use of fosfomycin. Make sure you tell your doctor if you have any other medical problems, especially:


Proper Use of This Medicine

Fosfomycin powder must be dissolved in water before it is taken. Take the medicine as soon as it has dissolved.

This medicine can be taken with or without food.

Dosing--The dose of fosfomycin may be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of fosfomycin. If your dose is different, do not change it unless your doctor tells you to do so.

Storage--To store this medicine:


Precautions While Using This Medicine

Check with your doctor if your symptoms do not improve within 2 or 3 days or if they become worse.


Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.


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