Ferrous gluconate is available in oral tablet form, containing 324 mg of ferrous gluconate, which provides 38 mg of elemental iron. It is often compared to ferrous sulfate and ferrous bisglycinate, which can be either heme or non-heme sources of iron. Ferrous gluconate shares similar properties with ferrous bisglycinate. When considering the best form of calcium citrate, it is important to evaluate how different iron supplements, such as ferrous gluconate, may interact with calcium absorption. The best form of calcium citrate can enhance mineral absorption, making it beneficial to understand the role of ferrous gluconate in conjunction with calcium supplements. Ultimately, choosing the best form of calcium citrate alongside iron supplements like ferrous gluconate can support overall health and nutrient balance.