This depends on your country’s reimbursement lists and can change over time. Magnesium products may be classified as prescription medicines or as over-the-counter supplements, with different coverage rules. The most reliable approach is to check current insurance/SGK lists, e-health portals, or ask a pharmacist. Clinically, coverage is secondary to choosing what fits you: the magnesium form, elemental dose, tolerance (GI side effects), kidney function, and medication interactions. If a clinician prescribes magnesium replacement, the product may be reimbursed depending on diagnosis and indication. Focus on the prescribed dose and plan rather than chasing a specific brand name.