Levothyroxine Sodium Injection 500 mcg Single Dose VialLevothyroxine Sodium Injection 500 mcg by Zydus Pharmaceutical is a sterile, preservative free, single dose intravenous solution formulated for the rapid correction of severe hypothyroidism or myxedema coma in adults and children. It delivers precise, powerful thyroid hormone replacement directly into the bloodstream when oral therapy is disrupted or contraindicated, ensuring swift and reliable management of critical hypothyroid states. What It Is