Supplementation with a multivitamin containing 800 µg of folic acid shortens the time to reach the preventive red blood cell folate concentration in healthy women

Abstract

Preventive RBC folate concentration of more than 906 nmol/L can be reached within four weeks of supplementation with daily intake of 800 microg folic acid. With respect to NTD prevention, we suggest the re-evaluation of the current recommendation of folic acid supplementation.