Magaldrate/simethicone Disease Interactions

Aluminum containing antacids may produce constipation, which may lead to intestinal obstruction. Osteomalacia and hypophosphatemia may be produced in patients with renal dysfunction who are not receiving dialysis. Patients with renal dysfunction, intestinal obstruction, osteomalacia, or hypophosphatemia should use antacids with low or no aluminum content.

Magnesium is eliminated by the kidney. The serum concentration of magnesium is increased in patients with renal impairment. Magnesium toxicity includes CNS depression, muscular paralysis, respiratory depression, hypotension and prolonged cardiac conduction time. Disappearance of the patellar reflex is a useful clinical sign of magnesium intoxication. Therapy with magnesium should be administered cautiously and dosages should be modified in patients with compromised renal function. Clinical monitoring of serum magnesium levels is recommended.

The use of magnesium-containing antacids has been associated with a laxative effect and may cause diarrhea. Therapy with magnesium-containing antacids should be administered cautiously in patients with diarrhea.