Magnesium hydroxide is an inorganic salt. It neutralizes stomach acid to relieve heartburn and indigestion. As a laxative, it draws water into the bowel to relieve occasional constipation.
The body absorbs very little of this compound, so it does not correct a magnesium deficiency. People take it as a liquid or chewable tablet with a full glass of water. Many take it at bedtime for its laxative effect or as needed for heartburn.
Avoid this product if you have kidney disease, a stomach blockage, or an electrolyte imbalance. Overuse leads to diarrhea, dehydration, and magnesium toxicity. Taking it within two hours of other medications reduces their absorption.