The most widely used antacid is.

Options

A. Cetrizine
B. Iproniazid
C. Chlorpheniramine
D. Zantac

Answer

**Step-by-Step Solution:**

1. **Understanding Antacids**: Antacids are substances that help neutralize stomach acidity. They are typically basic compounds that counteract the effects of excess hydrochloric acid (HCl) in the stomach.

2. **Role of Antacids**: When there is an increase in H+ ion concentration in the stomach, it can lead to discomfort, ulcers, and an imbalance in pH. Antacids work by reducing the concentration of H+ ions, thereby alleviating pain and restoring pH balance.

3. **Common Antacids**: There are various antacids available, including compounds like magnesium hydroxide, aluminum hydroxide, and calcium carbonate. However, the most widely used antacid is Ranitidine.

4. **Ranitidine (Zantac)**: Ranitidine, commonly known by its brand name Zantac, is a medication that not only neutralizes stomach acid but also inhibits the production of H+ ions. It is used to treat and prevent ulcers in the stomach and esophagus, as well as to relieve symptoms of heartburn.

5. **Conclusion**: Therefore, the most widely used antacid is Zantac (Ranitidine), which is effective in treating stomach ulcers and managing heartburn.

**Final Answer**: The most widely used antacid is Zantac (Ranitidine).

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