Lactobacillus Acidophilus

Most species of this non-spore-forming bacterium ferment glucose into lactose, hence the name Lactobacillus. The most common application of Lactobacillus is industrial, specifically for dairy production. This genus also contains several bacteria that make up part of the natural flora of the GI tract and vagina. Because of their ability to derive lactic acid from glucose, these bacteria create an acidic environment which inhibits growth of many bacterial species which can lead to urogenital infections.

Lactobacillus acidophilus (L. acidophilus) is the most commonly used probiotic, or “friendly” bacteria. Other potential probiotics include a variety of Lactobacillus species, such as the casei, GG, rhamnosus, NCFM, DDS-1, and johnsonii strains.

L. acidophilus preparations consist of dried or liquid cultures of living bacteria. These cultures are usually grown in milk but can sometimes be grown in milk-free cultures. L. acidophilus is available in freeze-dried granules, powders and capsules, and in liquid preparations, which must be kept refrigerated.

As with many other bacteria, it can be decimated by the use of antibiotics, and many health professionals recommend probiotics such as Lactobacillus to counter this side effect.


Lactobacillus Acidophilus can help with the following


Lactose Intolerance

Adding sufficient acidophilus bacteria or commercial preparations of the enzyme lactose to milk-containing meals will prevent symptoms and improve nutrient absorption for individuals with lactose intolerance, but not for those allergic to milk.

The Immune System  

Canker Sores (Aphthous Ulcers)

Acidophilus/bifidus consumption has been found to be useful for the prevention of canker sores in some individuals. Topical use, by chewing lactobacillus tablets several times each day, may also reduce the soreness in some cases. [CIBA Clin Symposia 1967;19: pp.38-64, Oral Surg 1970;30: pp.196-200]

Organ Health  


Supplementation with Acidophilus (one capsule with meals) helps keep healthy levels of the “good” bacteria in your body.


Premenstrual Syndrome / PMDD

Lactobacillus acidophilus has been shown to inhibit the fecal bacterial enzyme, beta-glucuronidase, which is responsible for deconjugating liver conjugated estrogen.


May do some good
Likely to help
Highly recommended



A sugar that is the simplest form of carbohydrate. It is commonly referred to as blood sugar. The body breaks down carbohydrates in foods into glucose, which serves as the primary fuel for the muscles and the brain.


Microscopic germs. Some bacteria are "harmful" and can cause disease, while other "friendly" bacteria protect the body from harmful invading organisms.


Pertaining to the stomach, small and large intestines, colon, rectum, liver, pancreas, and gallbladder.


A microflora (good bacteria) that acts as a digestive aid and lives in your intestines helping your body fight disease.


Derived from the Greek word for "life." Probiotic refers to organisms and substances which contribute to intestinal microbial balance. They are beneficial or "friendly" intestinal bacteria.

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