I-Alanine (ebizwa nangokuthi i-2-aminopropanoic acid, i-α-aminopropanoic acid) iyi-amino acid esiza umzimba ukuguqula i-glucose elula ibe amandla futhi isuse ubuthi obuningi esibindini.Ama-amino acid ayizingqimba zokwakha amaprotheni abalulekile futhi ayisihluthulelo sokwakha imisipha eqinile nenempilo.I-Alanine ingeyama-amino acid angabalulekile, angahlanganiswa ngumzimba.Kodwa-ke, wonke ama-amino acid angadingeka uma umzimba ungakwazi ukuwakhiqiza.Abantu abadla ukudla okunamaprotheni amancane noma abanenkinga yokudla, isifo sesibindi, isifo sikashukela, noma izimo zofuzo ezibangela i-Urea Cycle Disorders (UCDs) kungase kudingeke bathathe izithako ze-alanine ukuze bagweme ukuntula.