Ay, vitamin C (ascorbic acid) is generally safe during pregnancy, pero importante talaga na i-confirm mo sa OB mo kung gaano karaming dosage ang okay para sa iyo, bawat mama may different needs kaya better safe than sorry, lalo na first baby mo! A few of my mum friends took vitamin C supplements throughout pregnancy without issues, but honestly, mas makakatulog ka ng mahimbing kung talagang approved ng doctor mo yung specific brand at amount na plan mong i-take.