Antidepressant drug among the following is

Options

A. Phenelzine
B. Promethazine
C. Naproxen
D. Cimetidine

Answer

To determine which of the given drugs is an antidepressant, we can analyze each option based on their functions and classifications.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) Phenylzine
- B) Promethazine
- C) Naproxen
- D) Cimetidine

2. **Define Antidepressant Drugs**: Antidepressant drugs are medications used to treat depression by restoring the balance of neurotransmitters in the brain, which are chemicals that transmit signals between nerve cells.

3. **Analyze Each Drug**:
- **Phenylzine**: This drug is known to be an antidepressant. It works by inhibiting the enzyme Monoamine Oxidase, which helps increase the levels of neurotransmitters like serotonin and norepinephrine in the brain, thus improving mood and feelings of well-being.

- **Promethazine**: This drug is classified as an antihistamine. It is primarily used to treat allergies and does not have antidepressant properties.

- **Naproxen**: This is an analgesic (pain reliever) that works by reducing inflammation and pain. It does not treat depression.

- **Cimetidine**: This drug is an antacid used to treat conditions related to excess stomach acid, such as ulcers and gastroesophageal reflux disease (GERD). It is not an antidepressant.

4. **Conclusion**: Based on the analysis, the only drug among the options that is classified as an antidepressant is **Phenylzine**.

### Final Answer:
The antidepressant drug among the following is **Phenylzine (A)**.

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