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Aluminum Hydroxide/Magnesium Carbonate

    DEA Class; OTC

    Common Brand Names; Gaviscon Extra Strength Liquid, Gaviscon Extra Strength Tablets, Gaviscon Regular Strength Liquid

    • Antacids, Combos

    Neutralizes gastric acid, increases gastric pH

    Indicated for

    • Gastric Hyperacidity, Heartburn



    • Chalky taste

    • Constipation

    • Fecal impaction

    • Stomach cramps

    • Nausea

    • Vomiting

    • Aluminum intoxication

    • Hypophosphatemia

    • Osteomalacia


    • Diarrhea

    • Hypermagnesemia

    Not for the treatment of peptic ulcers

    If sodium or magnesium restricted, ask healthcare practitioner prior to taking medication

    Do not take maximum dose for >14 days

    In kidney disease, ask healthcare practitioner before taking medication; decrease renal function may result in toxicity of aluminum or magnesium

    If heartburn continues after taking medication, discontinue use and ask healthcare practitioner

    Do not use if trouble swallowing

    Antacids may interact with certain prescription drugs; ask healthcare practitioner before taking this medication; may increase or decrease rate and/or degree of absorption of concomitantly administered oral drugs by changing GI transit time, pH, or by cationic binding

    Pregnancy Category: C

    Lactation: Unknown whether distributed in breast milk


    Extra Strength Tablets: Chew 2-4 tablets PO q6hr PRN; not to exceed 16 tablets/day

    Extra Strength Suspension: 15-30 mL PO q6hr PRN; not to exceed 80 mL/day

    Regular Strength Suspension: 15-30 mL PO q6hr PRN; not to exceed 120 mL/day


    Safety & efficacy not established

    Aluminum hydroxide/magnesium carbonate

    tablet, chewable

    • 160mg/105mg

    suspension, oral

    • (31.7mg/119.3mg)/5mL
    • (84.6mg/79.1mg)/5mL
    • (254mg/237mg)/5mL