This section is from the book "Practical Materia Medica And Prescription Writing", by Oscar W. Bethea. Also available from Amazon: Practical Materia Medica and Prescription Writing.
Eng., Heavy Magnesium Oxide, Heavy Magnesia. A white powder differing from the foregoing in not being so bulky or so readily uniting with water.
30 grains (2 Gm.).
 
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