Question

Magaldrate is a combination of _______

• A. \( \text{30\% magnesium oxide and 20\% aluminium oxide} \)
• B. \( \text{40\% magnesium oxide and 10\% aluminium oxide} \)
• C. \( \text{75\% magnesium oxide and 12.5\% aluminium oxide} \)
• D. \( \text{30\% magnesium oxide and 10\% aluminium oxide} \)

Hint:

Remember that magaldrate combines magnesium and aluminum to neutralize stomach acid, aiming for a balance of effects.

Answer 1

The Correct Option is A

Magaldrate is an antacid medication that is a chemical combination of magnesium hydroxide and aluminum hydroxide. While the options refer to magnesium oxide and aluminum oxide, magaldrate itself is a complex of these hydroxides. The approximate ratio is often expressed in terms of the oxides for simplicity. Option A, representing a higher proportion of magnesium oxide relative to aluminum oxide, aligns with the general composition of magaldrate formulations, which aim to balance the rapid action of magnesium with the slower, longer-lasting effect of aluminum, while also mitigating the laxative effect of magnesium and the constipating effect of aluminum. Note that the exact percentages can vary slightly depending on the specific formulation.