Ay, yan talaga ang common side effects ng folic acid sa marami, ang sleepiness at mood swings especially pag nagsisimula lang! A few of us mums noticed na mas lumalala pa lalo pagod natin, pero it usually settles after a few weeks once the body adjusts. Best thing is to talk to your OB about it, baka kailangan lang ng adjustment sa timing ng intake (some of us take it with food or before sleep to minimize the grogginess) or baka need mag-switch ng brand if it's really bothersome, pero let your doc recommend which one fits best for you na hindi mag-trigger ng side effects.