The compound that causes general antirepressant action on the central nervous system belong to the class of `"………"`

Options

A. analgesics
B. tranquiiizers
C. narcotic analgesics
D. antihistamines

Explanation

To solve the question "The compound that causes general antidepressant action on the central nervous system belong to the class of '………'", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks us to identify the class of compounds that have a general antidepressant action on the central nervous system.

2. **Analyze the Options**: We have four options to consider:
- 1. Analgesics
- 2. Tranquilizers
- 3. Narcotic analgesics
- 4. Antihistamines

3. **Define Each Class**:
- **Analgesics**: These are painkillers that reduce or eliminate pain without affecting consciousness. They do not have a direct antidepressant effect.
- **Tranquilizers**: These are used to treat stress and mental disorders. They help in reducing anxiety and can have an antidepressant effect.
- **Narcotic Analgesics**: These are addictive painkillers that also relieve pain but can lead to addiction. They are not primarily used for antidepressant purposes.
- **Antihistamines**: These are used to counteract allergic reactions and do not have antidepressant properties.

4. **Identify the Correct Class**: From the definitions, tranquilizers are the class of compounds that are known to have a general antidepressant action on the central nervous system. They are specifically designed to alleviate stress and anxiety, which aligns with the question.

5. **Conclusion**: Therefore, the compound that causes general antidepressant action on the central nervous system belongs to the class of **tranquilizers**.

### Final Answer:
The correct answer is **tranquilizers**.

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