Before taking Xifaxan (rifaximin) 550mg, 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 Xifaxan (rifaximin) 550mg, tell your doctor or pharmacist your medical history.
Xifaxan (rifaximin) 550mg should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.
It is not known whether Xifaxan (rifaximin) 550mg passes into breast milk. Consult your doctor before breast-feeding.
Store at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Brief storage between 59-86 degrees F (15-30 degrees C) is permitted. Do not store in the bathroom. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
Xifaxan (rifaximin) 550mg 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. Xifaxan (rifaximin) 550mg stays in the digestive system and is not absorbed into the blood. It works by stopping the growth of bacteria.
This antibiotic treats only bacterial infections. It will not work for viral infections (e.g., common cold, flu). Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness.
Rifaximin is also used to prevent a brain problem caused by liver disease (hepatic encephalopathy). It may help to improve mental status.
Your dosage is based on your medical condition and response to treatment.
To treat traveler's diarrhea, take Xifaxan (rifaximin) 550mg by mouth with or without food as directed by your doctor, usually 3 times a day for 3 days.
To prevent hepatic encephalopathy, take Xifaxan (rifaximin) 550mg by mouth with or without food as directed by your doctor, usually 2 times a day.
Antibiotics work best when the amount of medicine in your body is kept at a constant level. Therefore, take Xifaxan (rifaximin) 550mg at evenly spaced intervals.
For traveler's diarrhea, continue to take Xifaxan (rifaximin) 550mg until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow, which may result in a relapse of the infection.
Tell your doctor if you are still having diarrhea after 1-2 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.
Remember that your doctor has prescribed Xifaxan (rifaximin) 550mg because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using Xifaxan (rifaximin) 550mg do not have serious side effects.
Xifaxan (rifaximin) 550mg may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a type of resistant bacteria. This condition may occur during treatment or weeks to months after treatment has stopped. Do not use anti-diarrhea products or narcotic pain medications if you have any of the following symptoms because these products may make them worse. Tell your doctor immediately if you develop: persistent diarrhea, abdominal or stomach pain/cramping, blood/mucus in your stool.
A very serious allergic reaction to Xifaxan (rifaximin) 550mg is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: 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.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Click here to view a more detailed list of Xifaxan side effects.
If you miss a dose of Xifaxan (rifaximin) 550mg, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.
Before using Xifaxan (rifaximin) 550mg, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: live vaccines.
Although most antibiotics probably do not affect hormonal birth control such as pills, patch, or ring, some antibiotics may decrease their effectiveness. This could cause pregnancy. Examples include rifamycins such as rifampin or rifabutin. Be sure to ask your doctor or pharmacist if you should use additional reliable birth control methods while using this antibiotic.
This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.