Hello.. Doctor, We Are Using Lactogen To Feed The Baby

Hello.. Doctor, we are using lactogen to feed the baby from the first day, also mother is feeding him.. Baby is very good in health. But last we feed the baby very happy and make him sleep, till 2:00 am he was fine I saw and I fell to sleep and in morning at 7:00 he was no more blood was coming from his nose and he was already dead... I don't know what happen .....