Good vitamins for 1 month old

Any suggestion na vitamins for 1 month old baby? Shes taking tiki tiki now but her pedia recommended supranutrol but we stop giving her that vitamins because of the expiration which is in feb2021.. That vitamins is so hard to find, thats why we switch it to tiki tiki without her consultation.. Any suggestion? By the way, she always experience a gassy tummy, and we end up giving her rest time every evening.. The pedia recommend rest time too. Thanks#advicepls