Health Guide


What is it?

Lactobacillus is a type of bacteria found in yogurt and buttermilk. It is used to treat diarrhea and some infections in the vagina. It may also be used for mouth sores and urinary tract infection.

Other names for Lactobacillus include: Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus bulgaricus, Lactobacillus rhamnosus, probiotic.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you

  • are taking medicine or are allergic to any medicine (prescription or over-the-counter (OTC) or dietary supplement).
  • are allergic or sensitive to Lactobacillus, lactose, or milk products (2).
  • are pregnant or plan to become pregnant while using this medicine.
  • are breastfeeding.
  • have any other health problems, such as high blood pressure or heart or blood vessel disease.


Talk with your caregiver about how much Lactobacillus you should take. The amount depends on the strength of the medicine and the reason you are taking Lactobacillus. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others. Some brands of Lactobacillus need to be stored in the refrigerator (2).


  • Before taking Lactobacillus, tell your doctor if you are pregnant or breastfeeding.
  • Do not take Lactobacillus if you are allergic to lactose (milk sugar) or milk (2).

Side Effects:

Call your doctor right away if you have any of these side effects:

  • Allergic reaction: Itching or hives, swelling in your face or hand, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, or rash.

Other Side Effects:

You may have the following side effects, but this medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.

  • Diarrhea, vomiting, burping, hiccups, gas (3)
  • May cause burning when used as a vaginal tablet that has Lactobacillus acidophilus and estriol (estrogen) (4)


1. Reid G, Bruce AW, McGroarty JA et al: Is there a role for Lactobacilli in prevention of urogenital and intestinal infections? Clin Microbiol Rev 1990; 3(4):335-344.

2. Product Information: DDS(R)-Acidophilus capsules, tablets, and powder. UAS Laboratories, Eden Prairie, MN. Accessed on Dec 5, 2007. Available from: .

3. Tankanow RM, Ross MB, Ertel IJ et al: A double blind, placebo-controlled study of the efficacy of Lactinex in the prophylaxis of amoxicillin-induced diarrhea. DICP Ann Pharmacother 1990;24:382-384.

4. Ozmen S, Turhan NO & Seckin NC: Garnerella-associated vaginitis: comparison of three treatment modalities. Tr J Med Sci 1998; 28:171-173.

PE 0108

Last Updated: 7/4/2018
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