A monocarboxylic acid amide obtained by formal condensation of the carboxy group of (2S)-amino(3-hydroxyadamantan-1-yl)acetic acid with the amino group of (1S,3S,5S)-2-azabicyclo[3.1.0]hexane-3-carbonitrile. Used in its monohydrate form for the treatment of Type II diabetes. It belongs to the biological class EC 3.4.14.5 (dipeptidyl-peptidase IV) inhibitor .