Rifaximin

Molecule Description

Rifaximin is an antibiotic used to treat diarrhea caused by the common bacteria

known as E. coli (traveler's diarrhea).

Uses

Contraindications

Side effects

Precautions and Warnings

Uses of Rifaximin

Traveler’s diarrhea
Irritable bowel syndrome (IBS)
Hepatic encephalopathy
Contraindications/ Do not use if
diarrhea that is not because of bacteria (such as viral diarrhea)
Diarrhea with fever
Bloody diarrhea
Liver disease
If you are allergic to Rifaximin, Rifampin, Rifapentine or Rifabutin
If you are suffering from abdominal pain, constipation or blockage in the bowel

Contraindications of Rifaximin

When should one not use Rifaximin

Diarrhea that is not because of bacteria (such as viral diarrhea)
Diarrhea with fever
Bloody diarrhea
Liver disease
If you are allergic to Rifaximin, Rifampin, Rifapentine or Rifabutin
If you are suffering from abdominal pain, constipation or blockage in the bowel

Side effects of Rifaximin

Common side effects of this drug are:

Stomach pain
Headache
Difficulty in breathing
Fatigue
Vomiting
Nausea
Urgency to empty your bowels
Abnormal test results in white blood cells
Loss of appetite, loss of body fluid (dehydration)

Precautions and Warnings of Rifaximin

Pregnancy

Can I take Rifaximin during pregnancy?

Rifaximin is not recommended in pregnancy.

Breast Feeding

Can I take Rifaximin while breastfeeding?

It is unknown if Rifaximin passes in breast milk. Rifaximin is, therefore, not to be used if you are breastfeeding.

Driving

Can I drive if I have consumed Rifaximin?

Safe to drive as Rifaximin is unlikely to impair driving ability. If you feel dizzy, do not drive.

Alcohol

Can I consume alcohol with Rifaximin?

No known interaction of alcohol and Rifaximin.

Other General Warnings

Talk to your doctor if

If you develop severe diarrhea during or after using Rifaximin, you should immediately stop the medication
Your urine may become reddish in colour while taking Rifaximin, this is expected and normal

Mode of Action of Rifaximin

How Does It Work?

Rifaximin works by interfering with bacterial cell growth mechanics; thus, bacterial growth is stalled, and the existing ones are killed by immunity or when their lifecycle ends. Rifaximin is used to ...

Interactions of Rifaximin

Interactions with other medicines

Inform your doctor if you are taking any other medicines as Rifaximin may interact with other medications such as Azithromycin, Diltiazem, Warfarin, Erythromycin, anti-fungal medications. It may also ...

Interactions with food items

Rifaximin may interact with grapefruit or its juice.

Dietary Restrictions of Rifaximin

Avoid grapefruit.

Dosage of Rifaximin

Overdose

No specific information is available on the symptoms and treatment of overdose with Rifaximin. However, in acute or long term accidental or intentional overdose, discontinue Rifaximin and seek emergen...

Missed a Dose

If you missed any dose, take it as soon as you remember. Do not take extra medicine to compensate for the missed dose. It is recommended not to miss a dose of antibiotics as it can lead to antibiotic ...

Content Details

WRITTEN BY

Dr. Abhishek B L

MBBS, MD (Pharmacology)

REVIEWED BY

Dr. Ritu Budania

MBBS, MD (Pharmacology)

Frequently Asked Questions (FAQs)

Q: What should I discuss with my healthcare expert before starting on this medication?

A: Some medical conditions and this medicine may interact with Rifaximin. Tell your healthcare provider about your complete medical history, especially of liver diseases, if any. You must give details about the nature of diarrhea, whether it is with or without fever, whether you are taking any antibiotics for some other condition (because some antibiotics cause diarrhea), presence or absence of blood in stools, etc. Tell your doctor about ongoing medications, herbal preparations or dietary supplements. The doctor needs to know if you are allergic to Rifampin (medicine given in tuberculosis and leprosy), Rifapentine, Rifabutin or Rifaximin itself. Share this information if you have any history.

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Last Updated on: 05 Oct 2020 | 10:47 PM (IST)

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