Buy Xifaxan (Rifaximin) - Brand & Generic

Brand Choice
Generic Choice
Medications orders are filled and shipped from approved fulfillment centers around the world including, but not limited to, Canada, Singapore, United Kingdom, New Zealand, Turkey, Mauritius, India, and Australia. The items in your order may be filled and shipped from any one of the above jurisdictions. The products are sourced from various countries including, but not limited to, Canada, United Kingdom, New Zealand, Turkey, India, and Australia. All of our affiliated fulfillment centers have been approved by the regulatory bodies from their respective countries. All the customer orders are checked and approved by qualified licensed pharmacists.

All trademarks and registered trademarks appearing on this website are the properly of their respective owners and My Drug Center is not affiliated with them in any way.

All generic products listed above are NOT manufactured or authorized by the maker of the brand name product. They are manufactured by licensed generic manufacturers.

Xifaxan is an oral tablet made up of an antibiotic called rifaximin. We carry Xifaxan in the generic alternative in 200mg, 400mg, and 550mg!

Xifaxan is a medication prescribed to treat traveler’s diarrhea caused by E. coli (Escherichia coli). This is a bacterial infection that affects the intestines, commonly contracted through drinking or eating contaminated foods or beverages. It may also be used to treat diarrhea when it is the main symptom of irritable bowel syndrome, another condition affecting the intestines.

Xifaxan (rifaximin) is effective at treating diarrhea because as an antibiotic, it is able to fight off the E. coli, the cause of the diarrhea, and prevent further growth of it. By doing this, it allows the immune system to get rid of the infection more easily.

Take Xifaxan (rifaximin) exactly the way your doctor has directed you too. It is important to follow directions given by your doctor to not only avoid adverse interactions and side effects but also to allow for the most effective dose to treat diarrhea. If you forget how your doctor would like you to take Xifaxan (rifaximin), you may be able to find instructions on the prescription bottle. Do not share this medication with others.

This medication may be taken with or without food.

Traveler’s diarrhea: take Xifaxan for 3 days

Irritable bowel syndrome: take Xifaxan for 2 weeks at a time

This information is only to help you get an idea of what treatment could look like. Treatment duration as well as dose strength may vary depending on each individual person. Only follow your doctor’s directions. 

Do not use Xifaxan (rifaximin)

Do not use this medication if you are allergic to rifaximin or medications such as rifabutin (Mycobutin), rifampin (Rifater, Rifadin, Rifamate), or rifapentine (Priftin).

Do not give this medication to a child who is younger than 12 years old.

Dose adjustment or special precautions may be required

To ensure this medication is safe for you, tell your doctor if you have liver disease, diarrhea with a fever, or watery or bloody diarrhea.


Before starting treatment, tell your doctor if you are pregnant or breastfeeding.

Common side effects of Xifaxan (rifaximin) may include:

  • swelling in your hands or feet;
  • nausea;
  • headache, dizziness;
  • tiredness; or
  • abnormal liver function tests.

The above side effects should not alarm you.

Serious side effects of Xifaxan (rifaximin) may include:

  • severe stomach pain;
  • diarrhea that is watery or bloody (even if it occurs months after your last dose); or
  • fever.

If you have any of the above side effects, contact your doctor right away.

Please note this is not a complete list of side effects. Not everyone experiences side effects; they are not guaranteed. If you do have side effects and they become unmanageable, consult your doctor about alternate medications.

Contact your doctor if you notice signs of…

fluid build-up around the stomach: rapid weight gain, stomach pain and bloating, trouble breathing while lying down.

What is Xifaxan?

Xifaxan is prescription medication available in tablet form for oral administration. Each Xifaxan tablet contains 200, 400, or 550 mg of rifaximin. What is rifaximin? Rifaximin is an antibiotic drug which gives Xifaxan its therapeutic effect. Rifaximin is also the name of the generic for Xifaxan, which is the form of Xifaxan we have available for purchase at our Canadian Pharmacy.


What is Xifaxan used for?

Xifaxan is prescribed to help treat diarrhea caused by irritable bowel syndrome or traveler’s diarrhea caused by Escherichia coli, a type of bacteria. Additionally Xifaxan is used for the treatment of hepatic encephalopathy.


What does Xifaxan Do?

Xifaxan is able to prevent the bacteria from producing the proteins needed in order to further progress, therefore preventing growth of bacteria and reducing symptoms of diarrhea.


How does Xifaxan work for hepatic encephalopathy?

Hepatic encephalopathy is a neurologic complication associated with liver disease once it becomes advanced and starts affecting the brain. Though undetermined, it is likely caused by bacteria in the intestines producing chemicals such as ammonia, which are then absorbed into the body causing a decline in brain function. Rifaximin is able to reduce the ammonia production by fighting off the bacteria generating it.


Where to buy Xifaxan

Finding Xifaxan at your local pharmacy may be more difficult than other medications as Xifaxan is a specialty drug. However, you can find the generic Xifaxan at our Canadian Pharmacy which can be purchased with a valid prescription.


Why is Xifaxan so expensive?

Xifaxan can be an expensive medication in the United States. It is considered a tier 5 drug by most medicare plans, which means it is a specialty drug. Specialty drugs are some of the most expensive types of drugs available. This specialty drug is also somewhat unique, as there is no generic for it in the United States yet. So, how much does Xifaxan cost? The price of this drug will likely always be within the thousands. However, that is only within the United States. In other countries, Xifaxan is much cheaper and already has a generic. This affordable generic for Xifaxan can be purchased at My Drug Center, sold as rifaximin.


How long does Xifaxan stay in your system?

Xifaxan has a half life of 6 hours, which mean it will stay in your system for about 30 hours after taking your last dose.


How long does it take for Xifaxan to work?

The exact amount of time it will take for Xifaxan to work will depend on a number of factors, such as your condition, the severity of your condition, and your age, among others. It is suggested that you contact your doctor if your symptoms do not improve with 24-48 hours after starting treatment; therefore, your symptoms should improve quickly, within a few a day.


How to take Xifaxan?

You should follow only your doctor’s directions on how to use Xifaxan; this information is only to help you get an idea of what treatment may look like. For traveler’s diarrhea; take one 200mg tablet orally 3 times a day for 3 days. For irritable bowel syndrome; take one 550mg tablet orally 3 times a day for 14 days; you may repeat this dosage regimen up to two times if symptoms return after treatment ends. You may take your dosage with or without food, as directed by your doctor.


How often can you take Xifaxan?

How long you are able to take Xifaxan for depends on certain factors, such as what dosage strength you’re taking and the condition you are treating. This medication is a short-term medication, usually not used for more than 2 weeks. Your doctor will be able to accurately provide you with how long you can take Xifaxan for.

Need Help

Need Help?


Call our CareTeam 7 days a week

IMPORTANT DISCLOSURE: All medical content and news articles on this website are supplied by an independent third party company. While the information can be useful, this website relies on others for its creation and cannot guarantee the accuracy, medical efficacy, or reliability of the information provided. In all circumstances, you should always seek the advice of your physician and/or other qualified health professional(s) for drug, medical condition, or treatment advice. This website does not provide any medical advice. The content provided on this website is not a substitute for professional medical advice, diagnosis or treatment.