Comparative Pharmacology
Head-to-head clinical analysis: MAGNESIUM SULFATE versus POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5 AND SODIUM CHLORIDE 0 45.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MAGNESIUM SULFATE versus POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5 AND SODIUM CHLORIDE 0 45.
MAGNESIUM SULFATE vs POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND SODIUM CHLORIDE 0.45%
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Magnesium sulfate acts as a physiological calcium channel blocker. It inhibits calcium influx into presynaptic nerve terminals, reducing acetylcholine release at the neuromuscular junction and decreasing muscle contraction. It also antagonizes NMDA receptors and stabilizes neuronal membranes.
Potassium is the major intracellular cation; it is essential for maintenance of intracellular tonicity, transmission of nerve impulses, contraction of cardiac, skeletal, and smooth muscle, and maintenance of normal renal function. Dextrose is a monosaccharide that provides calories and is metabolized to carbon dioxide and water, yielding energy. Sodium chloride maintains electrolyte balance and osmolality.
IV: Loading dose 4-6 g over 20-30 minutes, followed by maintenance infusion 1-2 g/hour for seizure prophylaxis in severe preeclampsia/eclampsia. IM: 4-8 g deep IM initially, then 4 g every 4 hours as needed.
Intravenous infusion: 10-20 mEq/hour, not exceeding 10-20 mEq/hour or 200 mEq/day, with rate not exceeding 1 mEq/kg/hour.
None Documented
None Documented
Clinical Note
moderateMagnesium sulfate + Gatifloxacin
"The serum concentration of Gatifloxacin can be decreased when it is combined with Magnesium sulfate."
Clinical Note
moderateMagnesium sulfate + Rosoxacin
"The serum concentration of Rosoxacin can be decreased when it is combined with Magnesium sulfate."
Clinical Note
moderateMagnesium sulfate + Levofloxacin
"The serum concentration of Levofloxacin can be decreased when it is combined with Magnesium sulfate."
Clinical Note
moderateTerminal elimination half-life approximately 4-6 hours in patients with normal renal function; prolonged to 12-24 hours or more in renal impairment, necessitating dose adjustment
Not applicable as potassium is an electrolyte; distribution half-life approximately 8-12 hours; elimination dependent on renal function
Primarily renal (90-95% as unchanged drug); minor biliary/fecal (<5%)
Primarily renal (90%); minor fecal (10%)
Category C
Category A/B
Electrolyte
Electrolyte
Magnesium sulfate + Trovafloxacin
"The serum concentration of Trovafloxacin can be decreased when it is combined with Magnesium sulfate."