Softeron is the brand name of a product that contains iron, folic acid , vitamin C etc. Iron supplement is required only if you are anaemic (i.e. your Hb level is below 12 g). Unfortunately most iron preparations can give rise to constipation. Softeron contains an iron molecule called ferrous fumarate. You can try ferrous gluconate (sold as J.P.Tone suspension) 15 ml daily to see if the problem of constipation is solved. You must take folic acid 5 mg (sold as Folet) one tablet daily since it prevents defects in the baby.