Generic Name: Rifaximin (rif AX i min)
Brand Name: Xifaxan
Medically reviewed by Drugs.com. Last updated on Oct 19, 2020.
Uses of Xifaxan:
- It is used to treat diarrhea.
- It is used to prevent brain problems caused by very bad liver disease.
- It is used to treat irritable bowel syndrome.
- It may be given to you for other reasons. Talk with the doctor.
What do I need to tell my doctor BEFORE I take Xifaxan?
- If you have an allergy to rifaximin or any other part of Xifaxan (rifaximin).
- If you are allergic to Xifaxan (rifaximin); any part of Xifaxan (rifaximin); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
- If you have diarrhea along with fever or blood in the stool.
This is not a list of all drugs or health problems that interact with Xifaxan (rifaximin).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Xifaxan (rifaximin) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Xifaxan?
- Tell all of your health care providers that you take Xifaxan (rifaximin). This includes your doctors, nurses, pharmacists, and dentists.
- Do not use longer than you have been told. A second infection may happen.
- If you are taking Xifaxan (rifaximin) for travelers' diarrhea, call your doctor right away if diarrhea lasts more than 24 to 48 hours or gets worse.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Xifaxan (rifaximin) while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Xifaxan) best taken?
Use Xifaxan (rifaximin) as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- Keep taking Xifaxan (rifaximin) as you have been told by your doctor or other health care provider, even if you feel well.
- Take with or without food.
What do I do if I miss a dose?
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Swelling in the arms or legs.
- Swelling of belly.
- Feeling very tired or weak.
- Shortness of breath.
- Low mood (depression).
- Diarrhea is common with antibiotics. Rarely, a severe form called C diff–associated diarrhea (CDAD) may happen. Sometimes, this has led to a deadly bowel problem (colitis). CDAD may happen during or a few months after taking antibiotics. Call your doctor right away if you have stomach pain, cramps, or very loose, watery, or bloody stools. Check with your doctor before treating diarrhea.
What are some other side effects of Xifaxan?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Belly pain.
- Upset stomach.
- Feeling tired or weak.
- Muscle spasm.
- Nose or throat irritation.
- Joint pain.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
If OVERDOSE is suspected:
How do I store and/or throw out Xifaxan?
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Xifaxan (rifaximin), please talk with your doctor, nurse, pharmacist, or other health care provider.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
More about Xifaxan (rifaximin)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Images
- Drug Interactions
- Compare Alternatives
- Support Group
- Pricing & Coupons
- En Español
- 72 Reviews
- Drug class: miscellaneous antibiotics
- FDA Approval History