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Magnesium Hydroxide/Mineral Oil

    DEA Class; OTC

    Common Brand Names; Phillips’ M-O

    •  Laxatives, Lubricant

    Oral and rectal lubricant laxative, and topically as a skin protectant
    Only laxative recommended for fecal impaction
    Marketed prior to 1962, has not been evaluated formally by FDA for safety and efficacy.

    Indicated for the relief of occasional constipation or fecal impaction.

    Existing electrolyte imbalance, appendicitis symptoms, acute surgical abdomen, fecal impaction, intestinal obstruction or perforation, dysphagia, bedridden patients

    Co-administration with stool softener

    < 6 years

    Hypersensitivity to drug or formulation components

    • Hypotension
    • Respiratory depression
    • Lipid pneumonia if taken when reclined
    • Excessive bowel activity
    • Abdominal cramping
    • Electrolyte imbalance
    • Muscle weakness
    • Anal pruritus and irritation
    • Laxative dependence (Avoid chronic use)

    Renal insufficiency, Mg-restricted diet

    If taken at bedtime, patient should not be reclining to avoid aspiration of oil droplets

    Do not take within 2 hr of meals; may interfere with food nutrients & vitamins absorption

    Use caution in patients with severe renal impairment

    Pregnancy Category: C for mineral oil, B for magnesium hydroxide

    Lactation: Use cautiously in breast feeding as it is unknown whether mineral oil is excreted into breast milk

    Adults

    90 mL/day PO or 1 rectal enema/day PR for no longer than 1 week.

    Geriatric

    90 mL/day PO or 1 rectal enema/day PR for no longer than 1 week.

    Adolescents

    90 mL/day PO or 1 rectal enema/day PR for no longer than 1 week.

    Children

    12 years: 90 mL/day PO or 1 rectal enema/day PR for no longer than 1 week.
    6—11 years: 30 mL/day PO or 1/2 rectal enema/day PR for no longer than 1 week.
    2—5 years: Oral safety and efficacy have not been established; 1/2 enema/day PR for no longer than 1 week.
    < 2 years: Do not use.

    Infants

    Do not use.

    Neonates

    Do not use.

    Magnesium hydroxide/mineral oil

    oral solution

    • (300 mg/1.25mL)/5mL