摘要:Faecal concentrations of Lactobacillus GG in human subjects were studied after oral administration of the bacterium Lactobacillus GG was given in total to 44 healthy human volunteers for 7 d as enterocoated tablets with daily doses of 1 x 109 c.f.u., 4 x l09 and 8 x l09 c.f.u. and in fermented milk with daily doses of 2·1 x 109 c.f.u. and 1·2 x 1010 c.f.u. All the volunteers excreted the organism by day 3 of the test period. There were no statistical differences in mean faecal Lactobacillus GG contents between the tablet groups. With fermented milk there was a clear, statistically significant increase in mean faecal Lactobacillus GG content when the administration was 1·2 x 1010 c.f.u./d compared to 2·1 x l09 c.f.u./d. The results indicate that fermented milk and enterocoated tablets are good carriers for administering Lactobacillus GG as a probiotic organism.Keywords - Lactobacillus GG; Faecal colonisation; Human probiotic.