The last answer told you to: assuming the same pharmacy produced both doses, in other words, assuming that what you have is actually 'folic acid', then 400mcg is the same as .4 milligrams which is...
Folic acid helps neural tube development, the dosage of folic acid will differ depending upon your health, generally women with epilepsy need more folic acid. Vitamen b6 helps with nausea (citus...