The present invention regards the composition having a blood pressure reducing and/or elevation suppressing effect comprising a mannose-based oligosaccharide mass comprising 1 to 10 molecules of monosaccharides linked together, said molecules mainly comprising mannose. It is the object of the present invention to provide an economical and simple food and drink which has an excellent blood pressure reducing and/or elevation suppressing effect without changing ordinary eating habits much, and a composition ingestible with a food and drink which effectively uses waste resources such as coffee extraction residues.