Well, they all do different things and so to cover your bases I would take them all.
Go up to 2400 mcg. It's safe and many people take even more.
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***At BFP -
wean off baby aspirin
start prenatal
exchange zinc for equivalent amount in prenatal - don't doubledose, just switch one for the other
gradually increase sodium to normal levels and use iodized salt
gradually wean off coq10
***After BFP
continue iron (in addition to a similar amount in prenatal) until consulting with your doctor to be sure you are not anemic. S/he may want you to continue the iron because yoru body is very greedy for iron in the 1st and 2nd tri
Add Vit. D to equal 1000 iu (inc. amount in prentatal) and take throughout pregnancy
***after the end of first trimester
gradually wean off folic to the level in prenatal.