Mag magnesiumoxide zwaar inwendig gebruikt worden?

Magnesiumoxide (zowel licht als zwaar) kan inwendig gebruikt worden.
Martindale beschrijft:
“Magnesium oxide is an antacid with general properties similar to
those of magnesium hydroxide (above). It is given in usual oral
doses of about 400 mg. It is often given with aluminium-containing
antacids such as aluminium hydroxide, which counteract its
laxative effect.
Magnesium oxide has been used for its osmotic laxative properties
in bowel preparation; oral doses of 3.5 g are given for this
purpose, combined with bisacodyl or sodium picosulfate.
Magnesium oxide is also used as a magnesium supplement in
deficiency states in oral doses of up to 800 mg (20 mmol) daily.
It is also used as a food additive.”