“PO-88 | Can tamoxifen and metformin nullify efficacy of CGRP-mAbs migraine prophylaxis? Patrizia Rossi,1,2 Valentina Cima,2 Alessandro Burlina2 | 1Headache Center, 2Neurology Department, San Bassiano Hospital, Bassano del Grappa (VI), Italy” (2025) Confinia Cephalalgica, 35(S1). doi:10.4081/cc.2025.15912.