Is a 6 iron considered a long iron? What are ferrous gluconate tablets used for? Ferrous gluconate contains 325 mg of elemental iron, which is equivalent to 220 mg of ferrous sulfate or 300 mg of ferrous fumarate in Canada. Additionally, for those seeking calcium supplements, calcium citrate tablets without vitamin D are available and can be beneficial for maintaining bone health. It’s important to note that calcium citrate tablets without vitamin D can be taken alongside iron supplements like ferrous gluconate for a balanced approach to nutritional needs. If you’re looking to increase your iron intake, consider the benefits of ferrous gluconate while also exploring calcium citrate tablets without vitamin D for overall wellness.