Why are metall hydroxides better alternative than sodium hydrogen carbonate in antacid ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Antacids:**
Antacids are substances that help neutralize stomach acid (H⁺ ions) to relieve symptoms of acidity and heartburn. They work by increasing the pH level in the stomach.

2. **Types of Antacids:**
There are various types of antacids, including metal hydroxides (like magnesium hydroxide or aluminum hydroxide) and sodium hydrogen carbonate (baking soda).

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