People with C677T mutations are at increased risk for NTD infants. Some sources suggested supplementation with MTHF instead of folic acid.

So we recommend:
Magnafolate® L-Methylfolate—maximizes the supplementation delivering a "finished" folate the body can immediately use without any kind of metabolization.
Jinkang Pharma ,the Manufacturer & Supplier of L-Methylfolate.