(Solgar) Solgar's Metafolin (L-methylfolate) requires no conversion because it is bioidentical to the bio-active form. In other words, it is "body ready." This can be useful for individuals whose bodies have difficulty converting folic acid to its active form. The active folate in Solgar's Folate formulation promotes heart health, a healthy nervous system, and the formation of healthy red blood cells. 1000 mcg. 1 daily.