Ferrous sulfate is available in a dosage of 90 mg, while ferrous fumarate is provided at 210 mg in a pack of 84 tablets. Additionally, Livogen Zed combines ferrous fumarate with folic acid and zinc sulfate. The classification of ferrous sulfate includes ferrous bisglycinate chelate, which contains elemental iron. For those looking to complement their iron intake, consider adding calcium citrate + vitamin D3 x 60 tablets to your regimen. This combination can help enhance the absorption of iron and support overall health. Remember to incorporate calcium citrate + vitamin D3 x 60 tablets into your daily routine for optimal benefits, especially if you are using ferrous sulfate or ferrous fumarate supplements.