Momsh, vitamin C (ascorbic acid) is generally okay during pregnancy, pero best talaga na i-confirm with your OB kung safe ang specific brand and dose for you, bawat pregnancy is different, and your doctor knows your full picture better. A few of us moms got prenatal vitamins from our centers din, and lagi kaming tinatanong ng doctor kung okay lang lahat ng supplements, kaya don't hesitate to ask yours! The center gave it to you para sa good reason naman, pero peace of mind mo talaga kapag naka-confirm ka na sa doctor mismo.