Probiotics are beneficial bacteria (sometimes referred to as “friendly germs”) that help to maintain the health of the intestinal tract and aid in digestion. They also help keep potentially harmful organisms in the gut (harmful bacteria and yeasts) under control. Most probiotics come from food sources, especially cultured milk products. Probiotics can be consumed as capsules, tablets, beverages, powders, yogurts and other foods.

Probiotics are:

Live microorganisms which when administered in adequate amounts confer a health benefit on the host. FAO/World Health Organisation (2001)

Probiotics should not be confused with prebiotics. Prebiotics are complex sugars (such as lactulose, lactitol, a variety of fructo-oligosaccharides and inulin) that are used as fuel by the healthful bacteria to stimulate their growth and activity while suppressing the growth and activity of harmful organisms. Other foods that support probiotic activity include Japanese miso, tempeh, kefir, raw milk, kombucha, bananas, garlic and onions. When prebiotics and probiotics are combined in one product, it is called a synbiotic.

Probiotics work by colonising the small intestine and crowding out disease-causing organisms, thereby restoring proper balance to the intestinal flora. They compete with harmful organisms for nutrients and may also produce substances that inhibit growth of harmful organisms in the gut.

Probiotic bacteria have been found to stimulate the body’s immune system. They may also aid in several gastrointestinal illnesses such as inflammatory bowel diseases, antibiotic-related diarrhoea, Clostridium difficile toxin-induced colitis, infectious diarrhoea, hepatic encephalopathy, irritable bowel syndrome and allergy.

Probiotics have been found to enhance the digestion and absorption of proteins, fats, calcium and phosphorus. They may help overcome lactose intolerance. Finally they may help restore healthful bacteria after a course of antibiotic therapy has altered the normal gastrointestinal flora.


Probiotic bacteria are very strain dependent, not species dependent. A strain is a type of a bacterial species, similar as to the example below:

  1. Bacterial group = German car = lactic acid bacteria
  2. Bacterial genus = Volkswagen = Lactobacillus
  3. Bacterial species = VW Golf = Lactobacillus acidophilus
  4. Bacterial strain = VW Golf 1.4 D = Lb. acidophilus LC1

Everybody knows that a Volkswagen Golf 1.4 D has other characteristics than a Volkswagen Golf 2.0i turbo, but you can’t see the difference on the outside.

The same is true for bacteria; they all look the same, but the biological characteristics (‘the engine’) are different. Hence, claims on health effects of a certain probiotic are only valid for that specific strain, not species.

Related products available at Nutri-Link:

Code Product description Type Size Supplier
71910 BifidoBiotics Caps 60 ARG
1282 Bio-BifidoBacT Pwdr 75g BRC
1285 BioDoph-7 Plus™ Caps 60 BRC
1204 BioDophilus™ Caps Caps 30 BRC
00007 Florastor S. Boulardii – 250mg Caps 50 BC
72460 GI Flora Caps 90 ARG
73390 Lactobacillus GG Culturelle® Caps 30 ARG
72780 Lactobacillus plantarum/rhamnosus/salivarius Caps 100 ARG
1281 Lactozyme™ Tabs 180 BRC
75620 Russian Choice GI™ Caps 100 ARG
75300 Russian Choice Immune™ Caps 60 ARG
75710 Russian Choice Immune™ Powder Pwdr 75g ARG
71050 Saccharomyces boulardii (3 billion) Caps 50 ARG
71130 SymBiotics with FOS Powder Pwdr 140g ARG


  1. Costalos C, Skouteri V, Gounaris A, et al. Enteral feeding of premature infants with Saccharomyces boulardii. Early Hum.Dev. 2003;74(2):89-96. View Abstract
  2. Hatakka K, Martio J, Korpela M, et al. Effects of probiotic therapy on the activity and activation of mild rheumatoid arthritis–a pilot study. Scand.J.Rheumatol. 2003;32(4):211-215. View Abstract
  3. Kajander K, Hatakka K, Poussa T, et al. A probiotic mixture alleviates symptoms in irritable bowel syndrome patients: a controlled 6-month intervention. Aliment Pharmacol Ther. 2005 Sep 1;22(5):387-94. View Abstract
  4. Rautava S, Kalliomak, M, Isolauri E. Probiotics during pregnancy and breast-feeding might confer immunomodulatory protection against atopic disease in the infant. J.Allergy Clin.Immunol. 2002;109(1):119-121. View Abstract
  5. Szajewska H, Mrukowicz J. Meta-analysis: non-pathogenic yeast Saccharomyces boulardii in the prevention of antibiotic-associated diarrhoea. Aliment Pharmacol Ther. 2005 Sep 1;22(5):365-72. View Abstract
  6. Tursi A, Brandimarte G, Giorgetti GM, et al. Effect of Lactobacillus casei supplementation on the effectiveness and tolerability of a new second-line 10-day quadruple therapy after failure of a first attempt to cure Helicobacter pylori infection. Med.Sci.Monit. 2004;10(12):CR662-CR666. View Abstract
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