Vitamins..

Mommies I need your inputs any vitamins na effective sa LO nyo?? My son is 7mos old and weighs 7.9 like 2 grams less the time that he was 5mos he is 8.1 malakas sya mag-milk pero sobrang likot nya he even try to stand alone and walks on his crib most of the time. Dont worry I knew all babies are different, I will still ask my baby's pedia about all your suggested vitamins. God Bless and Thank you in advance..