Referring to a Peptide Analogue of oxintomodulina comprising the Amino Acid Sequence: his (AIB) GLN Gly THR Phe - Thr - - - - - be ASP Tyr Lys Tyr Leu ASP ser Lys Lys ala GLN PHE Val Glu Gln - Leu - Trp - Leu ASN (AIB) Gly ARG ASN ARG ASN ASN Ile Ala xaa38 - xaa39 (SEC ID no: 5), where xaa38 and CYS are xaa39 Cys - Peg or are absent. It also relates to a Pharmaceutical composition.These analogs are useful in the treatment of Diabetes and \/ or ObesityREFERIDA A UN ANALOGO PEPTIDICO DE OXINTOMODULINA QUE COMPRENDE LA SECUENCIA DE AMINOACIDOS: His-(Aib)-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Lys-Lys-Ala-Gln-Glu-Phe-Val-Gln-Trp-Leu-Leu-Asn-(Aib)-Gly-Arg-Asn-Arg-Asn-Asn-Ile-Ala-Xaa38-Xaa39 (SEC ID NO:5), DONDE Xaa38 Y Xaa39 SON Cys, Cys-PEG O ESTAN AUSENTES. TAMBIEN ESTA REFERIDA A UNA COMPOSICION FARMACEUTICA. DICHOS ANALOGOS SON UTILES EN EL TRATAMIENTO DE LA DIABETES Y/O LA OBESIDAD