Ferrous Sulfate

( Feosol )

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Mar 21, 2023

Uses


Ferrous Sulfate (FEOSOL) Uses

Ferrous sulfate iron tablets are used to raise the levels of iron in people with iron deficiency anemia (low blood count). 

There may be other uses of ferrous sulfate. Your doctor or pharmacist can give you further information.

Ferrous Sulfate (FEOSOL) Mechanism of Action

Iron deficiency is a leading cause of anemia. Ferrous sulfate works by raising the levels of iron in the body. The body needs iron for healthy red blood cell formation. Iron is needed to make hemoglobin, a protein in red blood cells that carries oxygen to every cell in the body. In addition to red blood cell production, the body also needs iron to make myoglobin, a protein that provides oxygen to muscles, and for a healthy immune system.

Ferrous Sulfate (FEOSOL) Doses

Iron supplements typically contain 325 mg of ferrous sulfate which provides 65 mg of elemental iron. Therefore, each Feosol Original tablet contains 65 mg elemental iron. 

The recommended dosage is one tablet (325 mg ferrous sulfate) once a day in adults. The dose of iron supplement in children depends on body weight. Your child’s doctor will tell you how much elemental iron your child should take every day.

Besides the time tested form of iron (ferrous sulfate), other forms of iron supplement are also available, such as ferrous gluconate 324 mg tablet, ferrous fumarate 325 mg tablet, and polysaccharide iron 326 mg capsule. These forms are to be taken 1-4 times a day.

The recommended daily allowance of elemental iron is as follows:

  • 0 to 6 months: 0.27 mg per day
  • 7 to 12 months: 11 mg per day 
  • 1-3 years: 7 mg per day
  • 4-8 years: 10 mg per day
  • 9-13 years: 8 mg per day
  • 14-18 years males: 11 mg per day
  • 14-18 years females: 15 mg per day
  • 19-50 years males: 8 mg per day
  • 19-50 years females: 18 mg per day
  • 51+ years: 8 mg per day
  • Pregnancy: 27 mg per day
  • Lactation: 9-10 mg per day

Source: National Institutes of Health