The Clinical Advisor 
The US Preventive Services Task Force (USPSTF) recommends that all women who are capable of pregnancy or are planning to become pregnant take a daily supplement of 0.4 to 0.8 mg of folic acid, according to its recommendation statement published in JAMA. The USPSTF gave an A grade to its recommendation, which reaffirms its 2009 recommendation of folic acid supplementation for women of childbearing age for prevention of neural tube defects.