Ferrous gluconate liquid contains 210 mg of iron. Is it safe to take multivitamins along with ferrous sulfate? Additionally, how does ferrous fumarate compare to ferrous sulfate? It’s important to ensure that your dietary intake is balanced, especially when considering supplements like the Spring Valley calcium citrate dietary supplement, which provides 600 mg per serving in a 300-count bottle. When combining various supplements, including Spring Valley calcium citrate and iron sources such as ferrous sulfate or ferrous fumarate, it’s crucial to consult a healthcare professional to avoid potential interactions and ensure optimal absorption. Remember to check the dosage and composition of each supplement for the best health results.