Mommy, kailangan mo talaga mag-check with your doctor or OB before mag-switch ng calcium supplements, lalo na kung pregnant or breastfeeding ka, okay? Different products have different formulations, at gusto natin sigurado na safe at right dosage para sa'yo at baby mo. A few of us moms have had to ask our doctors about this exact thing, dahil what works for one person might not be best for another. Better to get professional advice na, para walang worry!