Some antacids can cause constipation or diarrhea. The brands vary in the ingredients they use. They can have different side effects. If you use too much heartburn medicine, your body may not get enough of some minerals from your food.

Can too many antacids cause constipation?

There are side effects from taking too many antacids. The least important side effects are constipation (aluminum-containing antacids) or diarrhea (magnesium-containing antacids.

Is constipation a side effect of antacid?

Disturbances of gut motility occur frequently under a highdose antacid regimen. Typical symptoms are diarrhea and constipation. They are due to the cations of the antacids. Aluminum causes constipation, magnesium induces diarrhea, and calcium has no definite motor effect.