A pregnant woman should take 100 iron pills daily at noon or at night , on a full stomach , before going to bed . Pregnant women who have severe anemia should take 2 pills twice a day , after meals , on a full stomach. Then lie down and rest. Iron vomiting often occurs on an empty stomach , so it should not be eaten on an empty stomach. Again, in the case of some people, nausea may occur in the first few days , but if you take a rest on a full stomach, it will get better in a few days. During this time you should drink plenty of pure drinking water and eat pulses and sakti in your daily diet.