Ferrous gluconate 500 mg, ferrous fumarate 210 mg, and iron III gluconate are common forms of iron supplements. If you are considering taking ferrous fumarate along with folic acid, it’s important to be aware of potential interactions. Additionally, you should consider calcium citrate interactions, as they can affect the absorption of iron. It is advisable to consult with a healthcare professional to ensure that the combination of these supplements is safe and effective for your needs. Remember to keep an eye on calcium citrate interactions, as they may influence how well your body absorbs both iron and folic acid.