Hi mama! Vitamin supplements during pregnancy ay importante talaga, pero ang specific na tanong mo about duration at timing, yun talaga dapat i-clarify ng doctor mo, lalo na if it's prescription or specific brand. Kaya please check with your OB, okay? Bawat pregnancy ay different, at alam nila ang best plan para sa iyo specifically. A few of us moms swear by following exactly what our doctor says about vitamins, mas peace of mind lang. Let me know what they say!