Question

5. How many milliliters of a 20% magnesium sulfate solution will contain 40 grams of the solute magnesium sulfate? Strength 20% Drug 409

Answer 1

1 ml of 20 % magnisium sulphate solution contain 200 mg

200 mg = 1 ml

4 gm=1ml/200mg

40,000mg=1/200*40,000

=200 ml

200 ml of 20% MgSO4 will contain 40 gm magnesium sulfate.

Which is Treatment of magnesium deficiency in hypomagnesaemia.

40 g or 160 mmols of magnesium ions (200ml of a 20% solution) by slow intravenous infusion (in glucose 5%) over up to 5 days, may be required to replace the deficit