Question: what a good prenatal vitamin should contain?
Answer: 400micrograms (mcg) of folic acid. 400 IU of vitamin D. 200 to 300 milligrams (mg) ofcalcium. 70 mg of vitamin C. 3 mg of thiamine. 2 mg of riboflavin. 20 mg of niacin. 6 mcg of vitamin B12.