the oral administration of 13.9 g ( 56.5 mmoles ) magnesium sulfate u.s.p. , in 4 equal hourly increments , resulted in the urinary excretion ( corrected for baseline excretion rate ) of 4.0 +/- 2.9 % ( mean +/- sd ) of the dose of magnesium during the first 24 hours and 6.9 +/- 7.0 % of the dose during a 72-hour interval .
C0024480
magnesium sulfate
C0024467
magnesium