From the Research
Tums, a common antacid containing calcium carbonate, can cause several negative side effects despite being generally safe for short-term use, including constipation, gas, and stomach cramps, as well as more severe effects like milk-alkali syndrome and reduced absorption of certain medications 1, 2, 3, 4, 5. The most common side effects of Tums include:
- Constipation
- Gas
- Stomach cramps Some people may experience rebound acid hyperproduction when stopping Tums after prolonged use, as the body compensates for reduced acid by producing more. Long-term or excessive use can lead to milk-alkali syndrome, characterized by high calcium levels, kidney problems, and alkalosis. Tums may also reduce absorption of certain medications like antibiotics, thyroid medications, and iron supplements. People with kidney disease should use Tums cautiously as it can worsen their condition or lead to kidney stones. Allergic reactions, though rare, can occur and may include rash, itching, swelling, dizziness, or breathing difficulties. To minimize side effects, take Tums as directed (typically not exceeding 7-8 tablets daily for adults), avoid long-term use without medical supervision, maintain adequate hydration, and consult a healthcare provider if you have underlying health conditions or take other medications 2. It is essential to note that the provided studies 1, 3, 4, 5 do not directly address the adverse effects of Tums, but rather focus on proton pump inhibitors, phosphate binding, and intestinal function, while study 2 provides the most relevant information on adverse effects associated with long-term use of proton pump inhibitors, which can be applied to the use of antacids like Tums.