Discharging or initiating a patient on Renamag

There are many factors that can affect the absorption and tolerability of various magnesium salts.  This said, below is a general conversion from magnesium oxide to Renamag/magnesium glycerophosphate.

Mg glycerophosphate bioavailability 60%

Mg oxide Bioavailability 15%

• Renamag dose of two 425mg capsules = 100mg elemental Mg x 60% = 60mg Mg
• Mg oxide 400 mg =244mg elemental Mg x 15% = 37mg Mg