This medication is used to treat diarrhea caused by the common bacteria known as E. coli (“traveler’s diarrhea”). Rifaximin should not be used if you have a fever or bloody diarrhea. It works by stopping the growth of bacteria.This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.Rifaximin is also used to treat irritable bowel syndrome with diarrhea. It is also used to prevent a brain problem caused by liver disease (hepatic encephalopathy). It may help you think more clearly.

HOW TO USE :

Read the Patient Information Leaflet if available from your pharmacist before you start taking rifaximin and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
The dosage is based on your medical condition and response to treatment.
To treat traveler’s diarrhea, take this medication by mouth with or without food as directed by your doctor, usually 3 times a day (every 8 hours) for 3 days.
To treat irritable bowel syndrome with diarrhea, take this medication by mouth with or without food as directed by your doctor, usually 3 times a day for 14 days.To prevent hepatic encephalopathy, take this medication by mouth with or without food as directed by your doctor, usually 2 times a day (every 12 hours).
For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.
For traveler’s diarrhea, continue to take this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection.
Tell your doctor if you are still having diarrhea after 1 to 2 days, if you have bloody diarrhea, or if you have a fever along with the diarrhea. Tell your doctor if your condition does not improve or if it worsens.

WARNİNGS AND PRECAUTIONS:

Before taking rifaximin, tell your doctor or pharmacist if you are allergic to it; or to other rifamycins (rifampin, rifabutin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history.
Rifaximin may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using rifaximin before having any immunizations/vaccinations.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

CONTRAINDICATIONS:

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.

SIDE EFFECTS:

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
This medication may rarely cause a severe intestinal condition due to a bacteria called C. difficile. This condition may occur during treatment or weeks to months after treatment has stopped. Tell your doctor right away if you develop: diarrhea that doesn’t stop, abdominal or stomach pain/cramping, blood/mucus in your stool.
If you have these symptoms, do not use anti-diarrhea or opioid products because they may make symptoms worse.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.