The drug tegamet is :

Options

A.
B.
C.
D.

Explanation

### Step-by-Step Solution:

1. **Identify the Drug**: The drug in question is referred to as "Tegamet."

2. **Recognize the Alternative Name**: Tegamet is also known as "Cimetidine."

3. **Classify the Drug**: Cimetidine is classified as an antacid.

4. **Understand Its Function**: Cimetidine works by reducing the amount of acid produced in the stomach. It is particularly used to treat conditions associated with excessive stomach acid, such as hyperacidity.

5. **Mechanism of Action**: The drug functions by blocking the action of histamine on the stomach's acid-producing cells, thereby decreasing acid secretion.

6. **Clinical Use**: Cimetidine is used in the treatment of conditions like peptic ulcers and gastroesophageal reflux disease (GERD), where excess stomach acid can lead to discomfort and complications.

7. **Conclusion**: Therefore, the answer to the question is that Tegamet (Cimetidine) is an antacid used to treat hyperacidity.