R2 Fix 550 Tablet

Reviewed By Dr. Mekhala Chandra, MD, MBBS

Last updated on 30 Mar 2026 | 12:30 PM (IST)

R2 Fix 550 Tablet is an antibiotic medicine used to treat infectious diarrhea. It kills and stops the growth of harmful bacteria in the intestines. This way it helps to get rid of the bad bacteria causing the infection, which in turn reduces the diarrhea.

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General Information

Contains

Rifaximin (550 mg)

Marketer

Integrin Health Care

Storage

Store below 30°C

The content is shown in English

Product introduction

R2 Fix 550 Tablet can be used alone or in combination with other medicines. It may be taken with or without food, preferably at the same time each day. It should be used in the dose and duration as advised by the doctor. Take it at the same time each day to get the most benefit, and you should keep on taking this medicine for as long as you are prescribed. Stopping it early may make the infection come back and harder to treat.

Some people may develop side effects like headache, constipation, fatigue, insomnia, dizziness, nausea, and chills. These side effects are usually temporary and go away during treatment as your body adjusts to the medicine. Consult your doctor if these side effects bother you or do not go away.

Before starting treatment with this medicine, you should tell your doctor if you are pregnant, breastfeeding, or suffering from any liver, kidney, or heart problems, or if you are allergic to any medicine. R2 Fix 550 Tablet is not effective in cases of travelers’ diarrhea. Use with caution in patients with severe hepatic impairment.

Uses of R fix Tablet

Treatment of Infectious diarrhea

Benefits of R fix Tablet

Treatment of Infectious diarrhea
Infectious diarrhea is a condition characterized by the sudden onset of loose or watery stools caused by harmful microorganisms in the digestive system. R2 Fix 550 Tablet helps treat infectious diarrhea by targeting and stopping the growth of harmful bacteria in the intestines. This medicine interferes with the bacteria's ability to make important proteins they need to survive and multiply. This helps to get rid of the bad bacteria causing the infection, which in turn reduces the diarrhea and helps you feel better.

Side effects of R fix Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of R fix

Peripheral edema
Nausea
Dizziness
Constipation
Fatigue
Urinary tract infection
Insomnia (difficulty in sleeping)

How to use R fix Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. R2 Fix 550 Tablet may be taken with or without food.

How R fix Tablet works

R2 Fix 550 Tablet is an antibiotic. It inhibits the bacteria's ability to make proteins and stops the growth of the bacteria that cause infectious diarrhea. It works only in the intestines, helping to relieve symptoms without affecting the rest of the body.

Quick tips

Finish the full course of the medication, even if you feel better. Stopping the course early increases the risk of the infection coming back.
Stay hydrated by drinking plenty of fluids to avoid dehydration from diarrhea.
Inform your doctor if symptoms persist or worsen after a few days of treatment.
Do not share this medication with others, even if they have similar symptoms.

Safety advice

Alcohol

UNSAFE

Do not drink alcohol while you are taking this medicine. R2 Fix 550 Tablet may cause excessive drowsiness when taken with alcohol.

Pregnancy

CONSULT YOUR DOCTOR

R2 Fix 550 Tablet is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.

Breast feeding

CONSULT YOUR DOCTOR

Information regarding the use of R2 Fix 550 Tablet during breastfeeding is not available. Please consult your doctor.

Driving

CONSULT YOUR DOCTOR

It is not known whether R2 Fix 550 Tablet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.

Kidney

CONSULT YOUR DOCTOR

There is limited data available on the use of R2 Fix 550 Tablet in patients with kidney disease. Please consult your doctor.

Liver

CAUTION

R2 Fix 550 Tablet should be used with caution in patients with severe liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking R fix with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Moderate

Warfarin (Oral Route)

Your doctor may frequently monitor your blood clotting time and adjust the doses of Warfarin accordingly. Rifaximin may reduce the efficacy of Warfarin.

Moderate

Amiodarone (Oral Route)

Watch out for symptoms of Rifaximin side effects such as diarrhea, dizziness, swelling or fatigue and consult your doctor if you experience them. They may adjust the doses as per the observations. Amiodarone may raise blood levels of Rifaximin.

Moderate

Amiodarone (Injection Route)

Moderate

Azithromycin (Oral Route)

Moderate

Azithromycin (Injection Route)

Frequently asked questions

Can R2 Fix 550 Tablet cause weight gain?

Usually, R2 Fix 550 Tablet does not cause weight gain. However, in case you feel there is an increase in weight, you should consult your doctor to determine the reason for weight gain.

Should I take R2 Fix 550 Tablet with food?

Yes, R2 Fix 550 Tablet can be taken orally with or without food with a glass of water. Take it as prescribed by your doctor for as long as it is prescribed.

Can R2 Fix 550 Tablet cure irritable bowel syndrome (IBS)?

Taking R2 Fix 550 Tablet can help improve the symptoms and delay the recurrence of the disease. However, it is not certain whether it will cure the disease completely or not. It has been shown that R2 Fix 550 Tablet can help improve symptoms such as diarrhea, abdominal pain, and discomfort. Consult your doctor for exact details on the treatment of IBS.

Fact Box

Chemical Class

Macrolactams

Habit Forming

Therapeutic Class

GASTRO INTESTINAL

Action Class

RNA polymerase inhibitors- Rifamycins

Related lab tests

Culture Stool

Stool Examination R/M

References

Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 1215-16.
Rifaximin. Harefield, Middlesex: Norgine Limited; 2010 [revised 21 Jun. 2017]. [Accessed 23 Jan. 2019] (online) Available from:
Robertson KD, Nagalli S. Rifaximin. [Updated 2023 May 22]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023. [Accessed 25 Jul. 2023] (online) Available from:
Central Drugs Standard Control Organisation. Rifaximin. [Accessed 25 Jul. 2023] (online) Available from:
Rifaximin [FDA Label]. Bridgewater, NJ: Salix Pharmaceuticals; 2024. [Accessed 03 Mar. 2025] (online) Available from:

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Integrin Health Care
Address: 51 C Rajpur Road, Dehradun-248009, Uttarakhand, India

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

R2 Fix 550 Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of R fix Tablet

Benefits of R fix Tablet

Side effects of R fix Tablet

How to use R fix Tablet

How R fix Tablet works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Warfarin (Oral Route)

Amiodarone (Oral Route)

Amiodarone (Injection Route)

Azithromycin (Oral Route)

Azithromycin (Injection Route)

Frequently asked questions

Can R2 Fix 550 Tablet cause weight gain?

Should I take R2 Fix 550 Tablet with food?

Can R2 Fix 550 Tablet cure irritable bowel syndrome (IBS)?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Culture Stool

Stool Examination R/M

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests