Hay, mama, any medicine for baby, even vitamins, kailangan talaga ng doctor's okay muna, especially at 1 month old pa lang siya. Please check with your pedia before giving anything, okay? They'll know kung kailangan talaga ni baby ang Ferlin drops based sa baby's weight at health. A few of us mums learned the hard way na what seems safe can sometimes interfere with baby's development, so mas safe mag-consult na lang. Let me know what your doctor says!