magnesium supplement (OTC)

Brand and Other Names:Mag-Tab SR
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Dosing & Uses

AdultPediatric

Dosage Forms & Strengths

caplet

  • 84mg

Magnesium Deficiency

168-336 mg PO divided BID

Renal Insufficiency

CrCl<30 mL/min: Use caution; monitor for hypermagnesemia

CrCl≥30 mL/min: Dose adjustement not necessary

Safety & efficacy not established

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Interactions

Interaction Checker

and magnesium supplement

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    Contraindicated

      Serious - Use Alternative

        Significant - Monitor Closely

          Minor

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            Adverse Effects

            Frequency Not Defined

            Diarrhea

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            Warnings

            Contraindications

            Hypersensitivity

            Cautions

            Use with caution in patients with neuromuscular disease, including myasthenia gravis

            Diets high in fat may cause decreased magnesium absorption

            Monitor patients with severe renal impairment for magnesium toxicity; use caution

            When used for self-medication, not for long term use; not for use if nausea, vomiting, or abdominal pain present; patients with impaired kidney function should use under the supervision of healthcare provider

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            Pregnancy & Lactation

            Pregnancy

            Not studied; magnesium crosses the placenta; effects of supplementation on neonate unknown

            Lactation

            Magnesium is present in breast milk; supplementation generally considered cmpatible with breastfeeding.

            Pregnancy Categories

            A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.

            B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.

            C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.

            D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.

            X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.

            NA: Information not available.

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            Pharmacology

            Magnesium plays a role as a cofactor of various enzymatic activities, including metabolic reactions and protein synthesis. It also plays a role lipoprotein lipase activity, which is involved in cholesterol metabolism. .

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            Administration

            Oral Administration

            Administer with food

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            Medscape prescription drug monographs are based on FDA-approved labeling information, unless otherwise noted, combined with additional data derived from primary medical literature.