Ay, ganyan din experience ng kaibigan ko, momsh, sometimes ang vitamins alone hindi talaga enough kung may underlying reason bakit hindi lumalaki ang baby, kaya mas better kung check mo muna with pedia para sure na okay lang everything else, like nutrition intake niya and growth pattern, basta once na clear na lahat, may ibang approaches pa na pwedeng i-combine like mas frequent meals or adding healthy fats sa diet niya. Pero honest, kung wala pang effect after trying those brands, definitely consult with doctor na para ma-assess properly ang situation, because sometimes kailangan ng personalized approach para sa bawat bata.