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Table 3 Observed frequencies for digestive symptoms (n and % of column totals), during the treatment period in 40 healthy volunteers assigned to a 7-d consumption of short-chain fructo-oligosaccharides (scFOS) at a dose from 2.5 to 10 g/d or a placebo

From: The capacity of short-chain fructo-oligosaccharides to stimulate faecal bifidobacteria: a dose-response relationship study in healthy humans

scFOS dose (g/d) Excess flatus Bloating Borborygmi Abdominal pain
  n % n % n % n %
0 (placebo) 6/8 75 5/8 62.5 4/8 50 3/8 37.5
2.5 7/8 87.5 6/8 75 5/8 62.5 4/8 50
5.0 6/8 75 4/8 50 5/8 62.5 3/8 37.5
7.5 7/8 87.5 4/8 50 3/8 37.5 5/8 62.5
10 7/8 87.5 6/8 75 4/8 50 5/8 62.5