Lactobacillus acidophilus, Lactobacillus bulgaricus, acidophilus
Lactobacilli acidophilus are bacteria. They are also called L. acidophilus. They make
lactic acid by breaking down carbohydrates. This is mainly done by breaking down the
sugar lactose in milk.
Lactobacilli grow well in milk and foods made from milk. They’re responsible for the
"souring" of milk. Many different strains can be found in milk foods. They can also
be found in the intestinal tracts and vaginas of adults and in the intestinal tracts
of babies fed with formula.
Some strains of Lactobacilli are used to make cheese and yogurt. These are Lactobacillus
Medically valid uses
L. acidophilus has been used to control certain types of diarrhea. It may be helpful
for diarrhea due to oral antibiotics. These medicines kill the normal flora of the
intestine. Consuming L. acidophilus helps put good bacteria into the intestines. This often stops diarrhea. It may also
help treat vaginal yeast infections.
There may be benefits that have not yet been proven through research.
Over the last few years, L. acidophilus has been recommended often. But studies are
still in progress.
For instance, L. acidophilus may improve immune function. Animal research shows that L. acidophilus
may increase the immune response to certain vaccines.
It may also help:
Treat lactose intolerance
Restore normal intestinal flora
Reduce cholesterol levels
Lower the risk of colon cancer
Prevent gastrointestinal ulcers
Help manage human papillomavirus infection
A related species of Lactobacillus may control the growth of cancer cells. Research
in this area is ongoing.
L. acidophilus comes as a powder, granule, or capsule form.
Pure cultures of L. acidophilus are available in health food stores. You should store
them in light-resistant containers. Keep them away from high heat. Make sure to use
them before the expiration date. Live-culture yogurt may also have L. acidophilus
Side effects, toxicity, and interactions
L. acidophilus likely won't cause any symptoms if you take too much of it.
Talk with your healthcare provider before using L. acidophilus if you take any of
You should also talk with your healthcare provider before taking it if you have a
weakened immune system due to HIV or another condition.