Hypocalcaemia
Adult: 200-1,000 mg repeated every 1-3 days depending on patient response or serum Ca determinations.
Child: 2.7-5 mg (0.136-0.252 mEq Ca)/kg repeated 4-6 hourly. Max: 1,000 mg.
Child: 2.7-5 mg (0.136-0.252 mEq Ca)/kg repeated 4-6 hourly. Max: 1,000 mg.
Intravenous
Acute hypocalcaemia
Adult: Initially, 3.5-7 mmol (7-14 mEq) Ca repeated every 1-3 days as needed.
Child: Initially, 0.5-3.5 mmol Ca/kg repeated every 1-3 days as needed.
Child: Initially, 0.5-3.5 mmol Ca/kg repeated every 1-3 days as needed.
Intravenous
Hypocalcaemic tetany
Adult: Initially, 2.25-8 mmol (4.5-16 mEq) Ca repeated as needed.
Child: Initially, 0.25-0.35 mmol Ca/kg repeated 6-8 hourly until a response is achieved.
Child: Initially, 0.25-0.35 mmol Ca/kg repeated 6-8 hourly until a response is achieved.
Intravenous
Hyperkalaemia
Adult: With secondary cardiac toxicity: Initially, 1.12-7 mmol (2.25-14 mEq) Ca, may be repeated after 1-2 minutes as needed. Titrate dose by constant ECG changes monitoring during administration.
Intravenous
Antidote in severe hypermagnesaemia
Adult: Initially, 500 mg administered promptly. Observe patient for signs of recovery before further doses.