UNC Health Medication Formulary
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System Formulary Update
​Magnesium carbonate 54 mg/5 mL oral solution (Magonate)
December 9, 2025
Situation
Magnesium carbonate 54 mg/5 mL oral solution (Magonate) has been discontinued by the sole manufacturer.
Background & Assessment
Magnesium carbonate 54 mg/5 mL oral solution is an over-the-counter dietary supplement on entity-level
formulary at UNC Medical Center. While it was used regularly prior to market withdrawal (178 administrations in
2024), it has been unavailable for purchase since March 2025. No other magnesium oral solution products are
currently commercially available.
Recommendation
Remove magnesium carbonate 54 mg/5 mL oral solution (Magonate) from UNC Health System formulary