Taking several prenatal products together often means some overlap in B vitamins, since each brand is formulated a little differently. B6, B9 and
B12 have a wide safety margin in pregnancy, so this kind of overlap usually isn't harmful.
Next Steps
Still, take your exact list of brands to your gynaecologist or pharmacist so they can check if you really need all three together, or if one can be dropped to avoid unnecessary duplication.
Health Tips
Don't stop or adjust any prescribed supplement's dose on your own. Please consult your gynaecologist before changing anything.