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ReZyst IM

Generic Name: bifidobacterium and lactobacillus (BIF eye doe bak TEER ee um and LAK toe ba SIL us)
Brand Name: Florajen3, Phillips Colon Health, Probiotic Formula, Provella, ReZyst IM, VSL#3

What is ReZyst IM (bifidobacterium and lactobacillus)?

Bifidobacterium and lactobacillus is a medical food used as a probiotic, or "friendly bacteria" to maintain a healthy digestive tract (stomach and intestines). It may also help maintain healthy bacteria in the vagina.

Bifidobacterium and lactobacillus is used in people with irritable bowel syndrome, ulcerative colitis, or an ileal pouch. Bifidobacterium and lactobacillus is also used in women to support vaginal health.

Not all uses for bifidobacterium and lactobacillus have been approved by the FDA. Bifidobacterium and lactobacillus should not be used in place of medication prescribed for you by your doctor.

Bifidobacterium and lactobacillus may also be used for purposes not listed in this product guide.

What is the most important information I should know about ReZyst IM (bifidobacterium and lactobacillus)?

Do not use this product without medical advice. Follow all directions on the product label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What should I discuss with my healthcare provider before taking ReZyst IM (bifidobacterium and lactobacillus)?

Before using bifidobacterium and lactobacillus, talk to your healthcare provider. You may not be able to use bifidobacterium and lactobacillus if you have certain medical conditions.

Bifidobacterium and lactobacillus is available in capsule, tablet, powder, and chewable tablet formulations. Do not use different formulations at the same time without medical advice.

Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have:

  • milk allergy or lactose intolerance; or

  • if you are taking an antibiotic medication.

It is not known whether bifidobacterium and lactobacillus will harm an unborn baby. Do not use this product without medical advice if you are pregnant.

It is not known whether bifidobacterium and lactobacillus passes into breast milk or if it could harm a nursing baby. Do not use this product without medical advice if you are breast-feeding a baby.

Do not give any herbal/health supplement to a child without medical advice.

How should I take ReZyst IM (bifidobacterium and lactobacillus)?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Your doctor may occasionally change your dose to make sure you get the best results.

Check your product label to see whether you should take this medicine with or without food.

The chewable tablet must be chewed before you swallow it.

Mix the oral powder with a cold non-carbonated drink or soft food (applesauce, yogurt, ice cream) and eat this mixture right away. Do not save for later use.

It may take up to 7 days weeks before your symptoms improve. Keep using the medication as directed.

Call your doctor if your symptoms do not improve, or if they get worse while using bifidobacterium and lactobacillus.

Store your medication as directed away from moisture, heat, and light. You may need to store the medicine in a refrigerator. Heat or humidity may affect the live bacteria in this product, making it less effective.

What happens if I miss a dose?

Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra bifidobacterium and lactobacillus to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking ReZyst IM (bifidobacterium and lactobacillus)?

Do not mix the oral powder with hot liquids or foods.

ReZyst IM (bifidobacterium and lactobacillus) side effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Common side effects may include:

  • stomach bloating or discomfort.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

See also: Side effects (in more detail)

What other drugs will affect ReZyst IM (bifidobacterium and lactobacillus)?

Other drugs may interact with bifidobacterium and lactobacillus, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.

More about ReZyst IM (bifidobacterium infantis / lactobacillus acidophilus)

Consumer resources

Related treatment guides

Where can I get more information?

  • Consult with a licensed healthcare professional before using any herbal/health supplement. Whether you are treated by a medical doctor or a practitioner trained in the use of natural medicines/supplements, make sure all your healthcare providers know about all of your medical conditions and treatments.
  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 1.01.

Date modified: October 14, 2016
Last reviewed: January 14, 2014