How much ferrous gluconate equals 325 mg of ferrous sulfate. reason for question is am a peritoneal dialysis patient and they are saying feg not as g?

Elemental iron: Each 5mg of ferrous glauconate has 0.6mg of elemental iron and each 5mg of ferrous sulfate has 1mg of elemental iron. 325 mg of ferrous sulfate has 65mg of elemental iron (I.e. 325 divided by 5), so it is equivalent to 542 mg of ferrous gluconate (I.e. 65 times 5, divided by 0.6). If you are iron deficient you need 2-3 mg of elemental iron per kg of your body weight daily in 2-3 divided doses.

Iron: Most iron pills contain ferrous iron. Ferrous sulfate, ferrous fumarate, and ferrous gluconate are the 3 common forms. All three come in a 325 mg tablet size, but each contains a different amount of “elemental iron”., which is what is absorbed. Fe Sulfate contains 65 mg; Fe gluconate contains only 35 mg elemental iron. Hence, not as much Fe per tablet. Fe fumarate contains 108 mg iron.