Before, during & after pregnancy. Compare active ingredients to Stuart PreNatal. 21st Century's PreNatal contains 800 mcg of folic acid and will provide vitamin and mineral supplementation throughout pregnancy and during postnatal period for both lactating and nonlactating mothers.* No added sugar, yeast, or preservatives. Gluten free. *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.