Check out our top picks below. If you are looking for a reliable iron supplement, Nature Made Iron 65 mg (325 mg Ferrous Sulfate) Tablets could be a great option. In my experience, Nature Made ...

is the most popular iron supplement. There are about 65 mg of elemental iron in a 325 mg ferrous sulfate tablet. Ferrous gluconate is 12% elemental iron, while ferrous fumarate is 33% elemental iron.

Iron supplements can cause side effects like dizziness ... General advice: The upper limit for iron is 40 mg for people 13 years or younger and 45 mg for people 14 years or older.