The calcium tablets for pregnant women 2029 ecosystem comprises a defined set of upstream, midstream, and downstream actors that collectively generate, qualify, distribute, and consume prenatal calcium supplementation. Upstream, mineral mining firms and pharmaceutical excipient manufacturers provide calcium carbonate or citrate and carrier agents under GMP standards. Midstream actors—formulation chemists, contract manufacturers, and packaging integrators—transform raw inputs into finished tablets, embed dosage control technologies, and ensure compliance with obstetric nutrition guidelines. Downstream, wholesale distributors, pharmacy chains, and digital health platforms deliver the product to obstetric clinics, prenatal care programs, and individual consumers. Value is captured through licensing of formulation patents, volume rebates from bulk procurement, and data‑driven adherence services that extend the product lifecycle.