Is ferrous gluconate available by prescription only? Ferrous fumarate tablets are available in oral doses of 60 mg, while publiron is derived from ferrous bisglycinate chelate. If you’re considering ferrous sulfate, which contains 142 mg, how much ferrous sulfate should you take? It’s important to consult with your healthcare provider regarding the appropriate dosage and whether calcitrate should be included in your regimen. Remember, understanding the right balance of ferrous sulfate and calcitrate can help optimize your iron supplementation. Always check with a professional for personalized advice regarding iron supplements like ferrous gluconate, ferrous fumarate, and calcitrate.