Folic Acid, Recurrent Miscarriages, and Other Disorders
Because there is some research that suggests that low folic acid levels may increase the risk of miscarriages, your healthcare provider may recommend a higher than usual folic acid dose if you have a history of recurrent miscarriages. Also, you may be instructed to take a high folic acid dose if you have a genetic mutation of your MTHFR gene (MTHFR stands for methylenetetrahydrofolate reductase). There may be other conditions for which your healthcare provider may recommend high doses of folic acid.
Folic Acid and Pregnancy: Talking With Your Healthcare Provider
Folic acid is very important for a healthy pregnancy. If you discover that you are pregnant and you have not been taking folic acid, start a multivitamin (or a non-prescription prenatal vitamin) right away until you can see your healthcare provider. If you think you have a medical reason to take more folic acid than normally recommended, check with your healthcare provider first.