Hi mommy! Honestly, from what a few of us preggy moms learned from our OBs, it's better to space them out, calcium is mas okay on an empty stomach or with light food, pero ascorbic acid with zinc mas effective pag kasama ng meals para hindi nauubusan ng tummy. Sa safest approach talaga, better ask your OB directly kung paano best schedule mo specifically, kasi bawat prenatal vitamin brand may different absorption rates din! Pero sa general, most of us take calcium sa umaga at vitamin C with zinc during or after meals, works well naman yun. Congratulations sa first baby mo!