It is recommended to take a prenatal multivitamin containing iron and folic acid during pregnancy, even if you have a good diet. This can help prevent birth defects and pregnancy complications. The increased nutritional needs during pregnancy can be difficult to meet through diet alone, so taking a supplement can ensure you are getting enough essential nutrients. Additionally, some women may require higher doses of folic acid due to certain medical conditions or medication they are taking. Consulting with a pharmacist can help you choose the most suitable multivitamin for your specific needs.