Perfect: Folic acid (vitamin b9) supplements should be taken prior to conception. Best evidence shows a benefit when taken up to 3 months prior to pregnancy. Normal dose is .4 to .8 mg/day & is found in most prenatal vitamins. Women who have a pregnancy affected by spina bifida or any neural tube defect should take higher doses (4 mg/day). I hope that helps, take care.
Answered 6/25/2014
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