Antacids are alkaline substances primarily used to directly neutralize gastric acid in the stomach to prevent/treat PUD, GERD, heartburn, and GI bleed. In the treatment of what medical diagnosis might aluminum-based antacids be used?

Chronic renal failure & hyperphosphatemia.

Explanation:

The excess production of acid in the stomach can cause acidity. Antacids may be defined as the chemicals that are used for the neutralization of the acids present in the stomach.

The mild antacid consists of the tablets of magnesium hydroxide. The aluminium based antacids are used in the chronic renal failure when large amount of acids are produced in the body or body produces phosphate and hydrogen ions in the body.