What is the difference between folic acid and ferrous sulphate?

Totally different: These are entirely different minerals that are required for proper functioning of your body. Folate (folic acid) is found in grains and leafy green vegetables. It's needed for red blood cell function and neurological health. Iron is a different mineral often taken as ferrous sulfate. It's naturally found in leafy green vegetables, some grains, and red meats. It's needed for red blood cell formation.