Momshie, I started drinking Anmum around 3 months pa lang ng pregnancy kaya mas early pa, pero marami sa mga friends ko ay nag-start din during second trimester, honestly, pwede mo na talaga i-start anytime, walang masama! Yes, it's over the counter sa supermarkets at pharmacies, at marami sa amin nag-swear by it for milk supply, pero para sure sa tamang timing at dosage para sa iyo specifically, better to ask your OB or midwife muna, they know your health best, mommy.