when magnesium citrate or magnesium oxide was administered on an empty stomach ( 10 meq . 4 times per day or 486 mg. magnesium per day for 2 weeks ) urinary magnesium increased by only 77 to 79 mg. per day and urinary citrate increased by 98 to 142 mg. per day .
C0126774
magnesium citrate
C0024467
magnesium