Uy, if baby needs Hepatitis B immunoglobulin urgently, you really need to contact your pedia or go to the hospital right away, they'll know where to get it and how to administer it properly, okay? This is something na kailangan ng medical guidance talaga, hindi ko matutulungan dito sa bahay. Check with your OB, pedia, or the nearest health center, sila ang makakahanap ng solution para sa baby mo agad. Hang in there, momsh!