MAGNESIUM SALTSConcentrated Phillip’s Milk of Magnesia, Milk of Magnesia, Phillip’s Milk of MagnesiaFunc. class.: Laxative, salineAction: Increases osmotic pressure, draws fluid into colon neutralizes HClUses: Constipation, bowel preparation before surgery or examinationDosage and routes:•Adult: PO 30-60 ml hs (Milk of Magnesia), 300 mg•Adult and child *6 yr: PO 15 g in 8 oz H2O (magnesium sulfate); PO 10-20 ml (concentrated Milk of Magnesia); PO 5-10 oz hs (magnesium citrate)•Child 2-6 yr: 5-15 ml (Milk of Magnesia)Available forms: Oral sol, susp 77.5 mg/g; tabs 300, 600 mgSide effects/adverse reactions:CNS:Muscle weakness, flushing, sweating, confusion, sedation, depressed reflexes, flaccid, paralysis, hypothermiaGI:Nausea, vomiting, anorexia, crampsCV:Hypotension, heart block, circulatory collapseMETA:Electrolyte, fluid imbalancesContraindications: Hypersensitivity, renal diseases, abdominal pain, nausea/vomiting, obstruction, acute surgical abdomen, rectal bleedingPrecautions: Pregnancy (B)Pharmacokinetics:PO:Peak 1-2 hr; excreted in fecesInteractions/incompatibilities:•Increased CNS depression: CNS depressants, barbiturates, narcotics, anestheticsNURSING CONSIDERATIONSAssess:•I&O ratio; check for decrease in urinary output•Cause of constipation; identify whether fluids, bulk, or exercise is missing from life-style•Cramping, rectal bleeding, nausea, vomiting; if these symptoms occur, drug should be discontinued•Mg toxicity: thirst, confusion, decrease in reflexesAdminister:•With 8 oz H2OEvaluate:•Therapeutic response: decreased constipationTeach patient/family:•Not to use laxatives for long-term therapy; bowel tone will be lost•Chilling helps the taste of magnesium citrate•Shake suspension well•Do not give at hs as a laxative; may interfere with sleep•Give citrus fruit after administering to counteract unpleasant tastePIPERACILLIN S...
