Modification of the intestinal microflora using probiotics and prebiotics.

Probiotics and prebiotics modulate the composition of the human gut microbiota. The beneficial effects may result from suppression of harmful microorganisms or stimulation of organisms which contribute in a positive way to the nutrition and health of the host. Both types of supplement represent an attempt to reconstitute the gut flora to its normal composition which has been adversely affected by dietary and environmental stresses.