LACTOBACILLUS JOHNSONII: Overview, Uses, Side Effects, Precautions, Interactions, Dosing and Reviews

Overview

Lactobacillus johnsonii (L. johnsonii) is a type of probiotic ("good" bacteria) found naturally in the human body. It's also found in fermented foods.

"Good" bacteria such as L. johnsonii might help the body break down food, absorb nutrients, and fight off "bad" organisms that might cause diseases. These bacteria are sometimes added to fermented foods like yogurt and also found in dietary supplements.

People use L. johnsonii for Crohn disease, hay fever, constipation, diarrhea, respiratory tract infections, and many other conditions, but there is no good scientific evidence to support these uses.

Don't confuse L. johnsonii with other probiotics, or with fermented food products such as fermented milk, kefir, or yogurt. These are not the same. Also note that the Lactobacillus genus was split up into 25 different genera in April 2020. Many species were reclassified at this time, but L. johnsonii remains in the Lactobacillus genus. Its name did not change. One specific strain of L. johnsonii, L. johnsonii La1 was previously known as L. acidophilus La1.

Uses & Effectiveness

We currently have no information for LACTOBACILLUS JOHNSONII Uses.

Side Effects

When taken by mouth: L. johnsonii is possibly safe for most people. L. johnsonii has been used safely in doses of up to 10 billion colony-forming units (CFUs) daily for up to 12 weeks or 4 billion CFUs daily for up to 6 months. It seems to be well-tolerated. But there isn't enough reliable information to know if heat-killed L. johnsonii is safe or what the side effects might be.

Special Precautions and Warnings

Pregnancy and breast-feeding: There isn't enough reliable information to know if L. johnsonii is safe to use when pregnant or breast-feeding. But there are no reasons to expect safety concerns when used appropriately.

Children: L. johnsonii is possibly safe in most children when taken by mouth appropriately. It's been used safely in infants in doses of about 10 billion colony-forming units (CFUs) daily in formula for 4 weeks. There isn't enough reliable information to know if L. johnsonii is safe for very small premature infants. Also, there isn't enough reliable information to know if heat-killed L. johnsonii is safe or what the side effects might be.

Weakened immune system: Probiotics have caused blood infections in a small number of people with weakened immune systems. If you have a weakened immune system, talk with your healthcare provider before taking probiotics, including L. johnsonii.

Damaged heart valves: Probiotic preparations can cause an infection in the inner lining of the heart chambers and heart valve. This is extremely rare, but people with damaged heart valves should stop taking probiotics, including L. johnsonii, before dental procedures or surgical procedures.

Interactions

Moderate Interaction

Be cautious with this combination

Antibiotic drugs interacts with LACTOBACILLUS JOHNSONII
L. johnsonii is a type of friendly bacteria. Antibiotics are used to reduce harmful bacteria in the body. Taking antibiotics along with L. johnsonii can reduce the effects of L. johnsonii. To avoid this interaction, take L. johnsonii products at least 2 hours before or after antibiotics.

Dosing

There isn't enough reliable information to know what an appropriate dose of L. johnsonii might be. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult a healthcare professional before using.

View References

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

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LACTOBACILLUS JOHNSONII - Uses, Side Effects, and More