Comparative Pharmacology
Head-to-head clinical analysis: DEXTROSE 5 AND SODIUM CHLORIDE 0 225 versus MAGNESIUM SULFATE IN DEXTROSE 5 IN PLASTIC CONTAINER.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DEXTROSE 5 AND SODIUM CHLORIDE 0 225 versus MAGNESIUM SULFATE IN DEXTROSE 5 IN PLASTIC CONTAINER.
DEXTROSE 5% AND SODIUM CHLORIDE 0.225% vs MAGNESIUM SULFATE IN DEXTROSE 5% IN PLASTIC CONTAINER
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Dextrose provides a source of calories and acts as a substrate for cellular metabolism, replenishing glucose stores. Sodium chloride provides electrolytes for maintenance of osmotic pressure and fluid balance.
Magnesium sulfate provides magnesium ions, which are essential for various physiological processes. It acts as a cofactor for enzymatic reactions, stabilizes excitable membranes, and antagonizes calcium entry at the neuromuscular junction, leading to reduced acetylcholine release and muscle relaxation. In the CNS, it may act as a noncompetitive antagonist of NMDA receptors, exerting anticonvulsant effects.
Intravenous; adult dose is 500-1000 mL at a rate of 100-200 mL/hour; frequency depends on fluid and electrolyte needs; maximum rate up to 400 mL/hour in hypovolemic states.
1 to 4 g intravenously as a 5% to 20% solution, rate not exceeding 150 mg/min; dosing frequency depends on indication (e.g., preeclampsia/eclampsia: 4-5 g IV loading then 1-2 g/hr infusion; hypomagnesemia: 1-2 g IV over 1-2 hours, may repeat based on serum magnesium levels).
None Documented
None Documented
Not applicable as a terminal half-life; dextrose is rapidly cleared from circulation with a metabolic clearance rate of ~15-20 mg/kg/min under normal conditions. The half-life of infused glucose is approximately 15-30 minutes due to rapid cellular uptake and metabolism.
Terminal half-life approximately 4-5 hours in normal renal function; prolonged in renal impairment (up to 40 hours).
Dextrose is metabolized to carbon dioxide and water via glycolysis and the citric acid cycle; essentially eliminated as CO₂ (exhaled) and water (renal, insensible loss). Sodium and chloride are primarily excreted renally (95%) with minor fecal (<2%) and sweat losses.
Primarily renal (90-100% as unchanged magnesium). Less than 1% biliary/fecal.
Category A/B
Category C
Electrolyte
Electrolyte