Depende sa brand at type ng vitamins, but honestly best to check with your pedia muna before combining them kasi baka may overlap ng ingredients or dosage na hindi ideal para sa baby! A few of my mum friends nag-ask din ng same concern, at lahat sinabi ng doctor nila na kailangan talagang i-confirm muna which ones are safe together based sa baby's age at needs, wala kasing one-size-fits-all dito. Your pedia will know best kung ano talaga ang kailangan ng baby at how to give it safely, so don't worry!