What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Xifaxan (Rifaximin)

Known as Zaxine,Coldir in the UK


Xifaxan (Rifaximin)

Prescription Required


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Generic Equivalent - Xifaxan (Rifaximin)

Prescription Required


You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

  • Product Details


    Chemical Name: RIFAXIMIN (rif-AX-i-min)

    Xifaxan (Rifaximin) is a prescription antibiotic used to treat several different conditions. It can be used for the following:

    • Reduction of the occurrence of hepatic encephalopathy
    • Treatment of travelers' diarrhea
    • Treatment of irritable bowel syndrome with diarrhea (IBS-D)

    Xifaxan is an antibacterial medication that works by binding to bacterial DNA-dependent RNA polymerase, preventing bacteria from replicating their DNA and preventing bacterial growth. 

    Xifaxan is thought to reduce the occurrence of hepatic encephalopathy by inhibiting the growth of ammonia-producing bacteria. 

    Xifaxan works in travelers' diarrhea and IBS-D by preventing the growth of certain harmful bacteria.

    Fact Table




    US FDA


    Less than 4%

    Legal status


    Chemical Name


    Elimination half-life

    6 hours

    Dosage (Strength)

    200mg, 550mg


    Not Recommended



    Protein binding


    PubChem CID






    ATC code






    Routes of administration

    By mouth (tablets)


    Xifaxan has different directions based on the condition being treated. Take it exactly as prescribed by your physician. That standard directions are:

    • Hepatic encephalopathy: Take one Xifaxan 550 mg tablet by mouth twice daily.
    • Travelers' diarrhea: Take one Xifaxan 200 mg tablet by mouth three times daily for three days.
    • IBS-D: Take one Xifaxan 550 mg tablet three times daily for 14 days. This regimen may be repeated up to two times as prescribed by the physician.


    The active ingredient and name of the Xifaxan generic is rifaximin

    The medication is available as Xifaxan 200 mg tablets and Xifaxan 550 mg tablets.


    If taking Xifaxan for travelers' diarrhea, it may not be effective for pathogens other than Escherichia coli (E. coli). If diarrhea does not improve within 24 to 48 hours after starting Xifaxan, stop taking the medication and speak with your doctor about different antibiotic options.

    Do not use Xifaxan to treat diarrhea accompanied by fever or blood in the stool, as this may be a sign of Clostridium difficile-associated diarrhea.

    If you have a history of liver damage or liver failure, speak with your doctor before starting Xifaxan.

    Xifaxan has the potential for important drug-drug interactions, especially with medications that are used to prevent organ transplant rejections. Speak with your doctor or pharmacist about your other medications before starting Xifaxan.

    Side Effects

    Some of the most common side effects of Xifaxan include:

    • Anorexia
    • Arthralgia
    • Decreased weight
    • Dizziness
    • Dysentery
    • Dyspnea
    • Nasal passage irritation
    • Nausea
    • Peripheral Edema
    • Pruritis
    • Pyrexia
    • Taste loss

    Please speak with your doctor or pharmacist for a complete list of side effects. The side effects experienced may vary based on which condition is being treated and for how long the medication is being taken.

    Buy Xifaxan 550 mg and other strengths online from Canada Pharmacy.


    1. Xifaxan [package insert]. Bridgewater, NJ: Valeant Pharmaceuticals; 2017.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 9991

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