Eh, iron supplements memang sering cause constipation ke diarrhoea, especially kalau dosage tinggi macam 2 tablets sekali makan! A few of my mum friends had the same issue, one of them kena cirit birit gak dengan Maltofer, pastu doc adjust balik dosage atau tengah-tengah makan je. Since your HB dropped quite a bit and doc specifically suggested the higher dose, best to message your doctor about the side effects, maybe dia boleh adjust timing atau recommend something to help with the tummy issue, sometimes paracetamol or a stool softener helps. Jangan stop the iron sendiri sebab you need to bring that HB up, tapi definitely update your doctor, okay? Take care and hang in there, 24 weeks is tough enough without feeling terrible from meds!