
Probiotic bacteria favorably alter the intestinal microflora balance, inhibit the growth of harmful bacteria, promote good digestion, boost immune function, and increase resistance to infection.1, 2 People with flourishing intestinal colonies of beneficial bacteria are better equipped to fight the growth of disease-causing bacteria.3, 4 Lactobacilli and bifidobacteria maintain a healthy balance of intestinal flora by producing organic compounds—such as lactic acid, hydrogen peroxide, and acetic acid—that increase the acidity of the intestine and inhibit the reproduction of many harmful bacteria.5, 6 Probiotic bacteria also produce substances called bacteriocins, which act as natural antibiotics to kill undesirable microorganisms.7
The amount of probiotics necessary to replenish the intestine varies according to the extent of microbial depletion and the presence of harmful bacteria. One to two billion colony forming units (CFUs) per day of acidophilus is considered to be the minimum amount for the healthy maintenance of intestinal microflora. Some Saccharomyces boulardii research has used 500 mg taken four times per day.
Where to Find It
Beneficial bacteria present in fermented dairy foods—namely live culture yogurt—have been used as a folk remedy for hundreds, if not thousands, of years. Yogurt is the traditional source of beneficial bacteria. However, different brands of yogurt can vary greatly in their bacteria strain and potency. Some (particularly frozen) yogurts do not contain any live bacteria. Supplements in powder, liquid extract, capsule, or tablet form containing beneficial bacteria are other sources of probiotics.
People using antibiotics, eating a poor diet, or suffering from diarrhea are more likely to have depleted colonies of friendly bacteria.
Acidophilus and bifidobacteria may manufacture B vitamins, including niacin, folic acid, biotin, and vitamin B6.
Certain medicines interact with this supplement.
| Some medicines may increase the need for this supplement. | |
| Some medicines interact with this supplement, so they should not be taken together. | |
| Some interactions between this supplement and certain medicines require more explanation. Click the link to see details. |
There are at least nine case reports of severe, invasive (internal) fungal infections developing in people treated with the yeast organism Saccharomyces boulardii. All of these people were debilitated or had impaired immune function prior to receiving Saccharomyces boulardii.8, 9 No such adverse reactions have been reported with other probiotic supplements or in people with normal immune systems.
In one study, treatment of infants with a product containing probiotics (Lactobacillus rhamnosus GG, L. rhamnosus, Bifidobacterium breve Bb99, and Propionibacterium freudenreichii subs. shermanii JS) plus a prebiotic (a galacto-oligosaccharide) resulted in a decrease in hemoglobin levels at six months of age. The authors of this report suggested that this effect may have been due to intestinal inflammation.10 This adverse effect has not been reported in older people, and it is not known whether other probiotics would have the same effect in infants.Copyright © 2012 Aisle7. All rights reserved. Aisle7.com
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2013.