Eh I haven't tried Isomil 0-12 bulan specifically la, but a few of my mum friends ada guna formula lain dalam range tu and mostly okay je depending on baby's tummy, some babies memang suit certain brands better than others. Best check dengan paediatrician first especially if your baby ada any sensitivities, and maybe observe how baby's digestion and mood lah after switching, tunggu few days baru decide whether it works for your little one.