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Probiotics: What Does Each Probiotic Actually Do? A Breakdown of What Each Probiotic Does. Article: Bruce Brightman - Lifesource Vitamins
Probiotics: What Does Each Probiotic Actually Do? A Breakdown of What Each Probiotic Does. Article: Bruce Brightman - Lifesource Vitamins

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What Does Each Probiotic Actually Do? A Breakdown of What Each Probiotic Does.

By: Bruce Brightman – Founder

Lifesource Vitamins

Probiotics are many, and we know it is hard to know just what each does, so here is a concise list of exactly what these Titans of Health actually do for our bodies and what their role is for our overall health.

Probiotics Overview:

40% of the World’s Population Suffers
from Digestive Health Issues and more than 50% of these people have a moderate to severe impact on their overall health and mental well-being.

70-80% of the body’s immune cells are located within the gastrointestinal tract. Providing clinically documented probiotic bacteria may modulate immune responses and support the body’s natural defense.

Probiotic Summaries:


L. reuteri DSM 17938

Helps maintain a healthy immune system and provides protection against infections. It treats and prevents diarrhea. It helps relieve colic. It releases a substance that is capable of killing bacteria, yeast and fungi, which makes it great for vaginal infection support against candida and UTI’s.

A study was done on 106 children ages one year to 48 months showed that it prevented nosocomial diarrhea.

L. acidophilus CL1285

This is the most utilized strain. It lives in the mouth, intestines, and vagina. It helps to synthesize vitamin K and many antimicrobial substances which give it antibiotic properties.

L. casei LBC80R

This strain is most often used to prevent and treat all types of diarrheas.

L. rhamnosus CLR2

Most effective for combating antibiotic-associated diarrhea and traveler’s diarrhea. It helps fight infections in the gut and urinary tract. It is also aids in dairy digestion and lactose intolerance.

L. acidophilus NCFM

This has been shown in multiple studies to help relieve the symptoms of pain and discomfort that are typical in IBS sufferers.

L. paracasei Lpc-37

Studies showed this provided therapeutic benefits in inflammatory bowel disease and is a potent strain with immune modulation properties.

B. lactis Bl-04

Supports the balance of intestinal bacteria during and after antibiotic therapy. It is commonly used for diarrhea, constipation, and IBS. Can also be used to prevent the common cold or flu. It helps your body perform essential functions such as digestion and staving off harmful bacteria.

B. lactis Bi-07

Consumption of Bifidobacterium lactis Bi-07 by healthy elderly adults enhances phagocytic activity of monocytes and granulocytes.

B. breve (Bbr8)

One study has shown that B. breve is effective in increasing the frequency of bowel movements in children suffering from constipation. This same study also showed that the children had less abdominal pain as a result.

It helps to promote respiratory health, skin health, and it helps to inhibit the overproduction of some of the primary culprits of yeast infections in women.

L. plantarum (14D)

Reduces pain and bloating while improving constipation in irritable bowel syndrome. It also helps with antibiotic-associated diarrhea.

B. animalis (subspecies lactis BLC1)

Used to improve digestion and restore normal flora. It has been used to treat bowel problems (such as diarrhea, irritable bowel), eczema, vaginal yeast infections, lactose intolerance, and urinary tract infections.

L. paracasei (IMC 502)

Studies showed that this probiotic provides therapeutic benefits in inflammatory bowel disease.

L. rhamnosus (IMC 501)

This is a type of friendly bacteria naturally found in your gut. Its health benefits include relieving IBS symptoms, treating diarrhea, strengthening your gut health, and protecting against cavities.

L. acidophilus (LA1)

This product can help restore the normal balance of intestinal bacteria. This product has been used for diarrhea and other stomach/intestinal problems. It has also been used for vaginal and urinary tract infections. Some diet supplement products have been found to contain possibly harmful impurities/additives.

B. longum (subspecies longum SP54)

Very important strain for the body and is the first to colonize in the GI tract of a newborn baby. It is also found in breast milk. It stimulates the immune response and microbial balance by pushing out the bad bacteria that cause discomfort and neutralizing everyday toxins in the gut. It also aids the production and absorption of all the B vitamins and boosts the immune system and helps regularity. It breaks down carbs without producing gas.

It helps to prevent or minimize various allergies or allergic reactions. It helps with the inflammation associated with Crohn’s disease or colitis.

It lowers the pH of the intestine/vagina to inhibit the growth of harmful bacteria.

Studies have shown that this strain to be beneficial in supporting a well-balanced mood and healthy management of stress and anxiety.


Lactobacillus rhamnosus (CRL 1505)

This has been known to help reduce hay fever symptoms if it's taken during allergy season. Scientists have found that this can help prevent colds, flu, and allergic episodes, and lessen the severity and duration of symptoms when they do occur.

This is a bacteria that exists naturally in the body, primarily in the intestines. Lactobacillus rhamnosus has been used as a probiotic, or "friendly bacteria," to prevent the growth of harmful bacteria in the stomach and intestines.

Mental Health

Lactobacillus helveticus (Rosell-52)

Some studies show that L.helveticus and Bifidobacterium longum, taken in combination, can reduce symptoms of anxiety and depression. They also showed consumption of fermented milk with L. helveticus improved sleep in patients aged 60–81 years.

Lactobacillus helveticus is traditionally used in the manufacture of Swiss-type cheeses and long-ripened Italian cheeses such as Emmental, Gruyere, Grana Padano and Parmigiano Reggiano and it is the prevalent species recovered from natural lactic starter cultures used for the production of typical Italian cheese.

Bifidobacterium longum (Rosell-175)

Studies show that L.helveticus and Bifidobacterium longum, taken in combination, can reduce symptoms of anxiety and depression.

This is effective in alleviating gastrointestinal, immunological, and infectious diseases.


Lactobacillus casei (PXN 37)

Probiotics enhance immune responses and reduce the levels of alcohol-induced inflammatory cytokines and reactive oxygen species (ROS) production in the liver and intestine. The liver depends on the gut flora to remove as many toxins as possible so that it doesn't have to work as hard. Without healthy gut flora, the liver will be doing double the work. The consumption of probiotic supplements will keep the gut flora healthy and strong.

Helps control diarrhea. It produces lactic acid to lower the pH of the gut which helps prevent the growth of bacteria. It lives in the mouth and intestines of both infants and adults.

Lactobacillus rhamnosus (PXN 54)

This includes some pathogenic species and food industries consider S. thermophilus a safer bacterium than many other Streptococcus species. In fact, yogurt and cheese that contains live cultures of S. thermophilus are thought to be beneficial to health.

Streptococcus thermophilus (PXN 66)

This is a starter strain for making yogurt and cheese. It ferments milk sugar (lactose) that turns it into lactic acid which is effective in preventing lactose intolerance and it also lowers the pH of the yogurt preventing the growth of harmful bacteria causing food poisoning.

It keeps the microflora of the intestines balanced.

It may also, be beneficial for chemotherapy patients.

Lactobacillus acidophilus (PXN 35)

This product can help restore the normal balance of intestinal bacteria. This product has been used for diarrhea and other stomach/intestinal problems. It has also been used for vaginal and urinary tract infections.

Bifidobacterium breve (PXN 25)

This strain has the ability to compete against harmful bacteria due to the large variety of molecules it can digest. It inhibits E.coli. It is present in the intestines and the vagina. It decreases the occurrence of gas, diarrhea, and bowel irritations.

Bifidobacterium longum (PXN 30)

This is commonly used for diarrhea, constipation, and irritable bowel syndrome (IBS). They're also used for preventing the common cold or flu, and lots of other conditions, but there is no good scientific evidence to support many of these uses.

Bifidobacterium bulgaricus (PXN 39)

Best known for treating constipation. It has been studied as helpful for infants experiencing colic.

Mouth and Throat

S. salivarius (K12)

This is a probiotic intended for use in the oral cavity. It may reduce the reoccurrence of throat infections and tonsillitis by up to 90%, according to data from new clinical trials from Italy.

S. salivarius (M18)

This is found naturally in your mouth and throat. Scientists discovered that while everyone has Streptococcus salivarius bacteria, only a very few have the specific beneficial strain which crowds out bad bacteria.

L. plantarum (L-137)

This was examined for the effect of oral administration on protection against influenza virus infection in mice. The survival time was significantly prolonged in mice treated with this strain than that in mice treated with PBS as controls. The viral titers in the lung were significantly lower in mice treated with this strain.


Lactobacillus reuteri (NCIMB 30242)

This probiotic strain helps maintain already-healthy levels of LDL cholesterol. An important connection exists between the gut microbiome, probiotics, and heart health. Our gut microbiome plays a role in our cholesterol levels, weight, blood pressure levels, inflammation in the body, and oral health, each of which are important factors in heart health.


L. rhamnosus SP1

Supplementation with Lactobacillus rhamnosus SP1 normalizes skin expression of genes implicated in insulin signaling and improves adult acne.

L. acidophilus L-92

L. acidophilus is a probiotic bacteria that naturally occur in the human gut and other parts of the body. This bacteria helps the digestive system break down sugars, such as lactose, into lactic acid. Trillions of bacteria and other micro-organisms live in every person's gut. It promotes dermal health, moisture, and comfort It also provides seasonal support for the health of the nasal mucosa.

Urinary and Vaginal Health

L. crispatus LbV 88

This probiotic intake increases cure rate of urinary tract infections and has been clinically validated to promote a balanced vaginal microbial ecosystem. The lactic acid bacterium Lactobacillus crispatus is a natural resident of the vagina. It produces lactic acid, contributing to an acid vaginal environment. This acidity is important, as pathogenic bacteria generally do not like a low pH.


No nutrient is more closely associated with Immune Health than Probiotics, other than Vitamin D.

ü Lifesource Vitamins Probiotics feature Bio-Enhanced Acid Resistant Strains (B.E.A.R.S) that are cultivated to be gastric resistant and bile tolerant which eliminates the need for enteric coating.

ü Each strain is carefully selected for efficacy using 50 factors, such as digestibility, acid tolerance, antibiotic sensitivity, and pathogen inhibition.

ü From raw material handling, climate, and humidity-controlled manufacturing, and multi-stage quality control, you can trust the best-in-class manufacturing of Lifesource Vitamins to provide the very best probiotics for you and your family.

ü All of our Probiotics are manufactured to be shelf-stable without the need for refrigeration. (Upon opening them, we would like you to refrigerate them if possible, but not mandatory)

Our Unmatched Stable Probiotic Strains

We use only highly stable probiotic strains, each exposed to a series of harsh environments to develop heat, moisture, pressure, acidity, alkalinity, and antibiotic resistance. This resistance is critical in ensuring that probiotics survive long enough to fulfill their purpose.